Book III chapter 7

But if the stomach both retains and benefits by its food, then it employs it for the end for which it [the stomach] naturally exists. And it exists to partake of that which is of a quality befitting and proper to it. Thus it attracts all the most useful parts of the food in a vaporous and finely divided condition, storing this up in its own coats, and applying it to them. And when it is sufficiently¹ full it puts away from it, as one might something troublesome, the rest of the food, this having itself meanwhile obtained some profit from its association with the stomach. For it is impossible for two bodies which are adapted for acting² and being acted upon to come together without either both acting or being acted upon, or else one acting and the other being acted upon. For if their forces are equal they will act and be acted upon equally, and if the one be much superior in strength, it will exert its activity upon its passive neighbour; thus, while producing a great and appreciable³ effect, it will itself be acted upon either little or not at all. But it is herein also that the main difference lies between nourishing food and a deleterious drug; the latter masters the forces of the body, whereas the former is mastered by them.

There cannot, then, be food which is suited for the animal which is not also correspondingly subdued⁵ by the qualities existing in the animal. And to be subdued means to undergo alteration⁶. Now, some parts are stronger in power and others weaker; therefore, while all will subdue⁴ the nutriment which is proper to the animal, they will not all do so equally. Thus the stomach will subdue and alter its food, but not to the same extent as will the liver, veins⁷, arteries⁸, and heart.

We must therefore observe to what extent it does alter it. The alteration is more than that which occurs in the mouth, but less than that in the liver and veins. For the latter alteration changes the nutriment into the substance of blood, whereas that in the mouth obviously changes it into a new form, but certainly does not completely transmute⁹ it. This you may discover in the food which is left in the intervals¹⁰ between the teeth, and which remains¹² there all night; the bread is not exactly bread, nor the meat meat, for they have a smell similar to that of the animal’s mouth, and have been disintegrated¹³ and dissolved, and have had the qualities of the animal’s flesh impressed upon them. And you may observe the extent of the alteration which occurs to food in the mouth if you will chew some corn and then apply it to an unripe¹⁴ [undigested] boil: you will see it rapidly transmuting¹⁵ — in fact entirely¹⁶ digesting — the boil, though it cannot do anything of the kind if you mix it with water. And do not let this surprise you; this phlegm [saliva] in the mouth is also a cure for lichens15; it even rapidly destroys scorpions¹⁷; while, as regards the animals which emit venom¹⁸, some it kills at once, and others after an interval¹¹; to all of them in any case it does great damage. Now, the masticated¹⁹ food is all, firstly, soaked in and mixed up with this phlegm; and secondly²⁰, it is brought into contact with the actual skin of the mouth; thus it undergoes more change than the food which is wedged into the vacant spaces between the teeth.

But just as masticated food is more altered than the latter kind, so is food which has been swallowed more altered than that which has been merely masticated. Indeed, there is no comparison between these two processes; we have only to consider what the stomach contains — phlegm, bile, pneuma, [innate²²] heat, and, indeed the whole substance of the stomach. And if one considers along with this the adjacent viscera like a lot of burning hearths²³ around a great cauldron — to the right the liver, to the left the spleen, the heart above, and along with it the diaphragm (suspended and in a state of constant movement), and the omentum sheltering them all — you may believe what an extraordinary alteration it is which occurs in the food taken into the stomach.

How could it easily become blood if it were not previously²⁴ prepared by means of a change of this kind? It has already been shown that nothing is altered all at once from one quality to its opposite. How then could bread, beef, beans, or any other food turn into blood if they had not previously undergone some other alteration? And how could the faeces be generated right away in the small intestine²⁵? For what is there in this organ more potent²⁶ in producing alteration than the factors in the stomach? Is it the number of the coats, or the way it is surrounded by neighbouring viscera, or the time that the food remains in it, or some kind of innate heat which it contains? Most assuredly the intestines²⁷ have the advantage of the stomach in none of these respects. For what possible reason, then, will objectors have it that bread may often remain a whole night in the stomach and still preserve its original qualities, whereas when once it is projected into the intestines, it straightway becomes ordure? For, if such a long period of time is incapable²⁸ of altering it, neither will the short period be sufficient, or, if the latter is enough, surely the longer time will be much more so! Well, then, can it be that, while the nutriment does undergo an alteration in the stomach, this is a different kind of alteration and one which is not dependent on the nature of the organ which alters it? Or if it be an alteration of this latter kind, yet one perhaps which is not proper to the body of the animal? This is still more impossible. Digestion²⁹ was shown to be nothing else than an alteration to the quality proper to that which is receiving nourishment³⁰. Since, then, this is what digestion means and since the nutriment has been shown to take on in the stomach a quality appropriate to the animal which is about to be nourished by it, it has been demonstrated adequately that nutriment does undergo digestion in the stomach.

And Asclepiades is absurd when he states that the quality of the digested food never shows itself either in eructations or in the vomited³¹ matter, or on dissection³². For of course the mere²¹ fact that the food smells of the body shows that it has undergone gastric³³ digestion. But this man is so foolish that, when he hears the Ancients saying that the food is converted in the stomach into something “good,” he thinks it proper to look out not for what is good in its possible effects, but for what is good to the taste: this is like saying that apples (for so one has to argue with him) become more apple-like [in flavour] in the stomach, or honey more honey-like!

Erasistratus, however, is still more foolish and absurd, either through not perceiving in what sense the Ancients said that digestion is similar to the process of boiling, or because he purposely confused himself with sophistries³⁴. It is, he says, inconceivable that digestion, involving as it does such trifling³⁵ warmth, should be related to the boiling process. This is as if we were to suppose that it was necessary to put the fires of Etna under the stomach before it could manage to alter the food; or else that, while it was capable of altering the food, it did not do this by virtue³⁶ of its innate heat, which of course was moist, so that the word boil was used instead of bake.

What he ought to have done, if it was facts that he wished to dispute about, was to have tried to show, first and foremost, that the food is not transmuted³⁷ or altered in quality by the stomach at all, and secondly, if he could not be confident of this, he ought to have tried to show that this alteration was not of any advantage to the animal. If, again, he were unable even to make this misrepresentation, he ought to have attempted to confute the postulate³⁸ concerning the active principles — to show, in fact, that the functions taking place in the various parts do not depend on the way in which the Warm, Cold, Dry, and Moist are mixed, but on some other factor. And if he had not the audacity³⁹ to misrepresent facts even so far as this, still he should have tried at least to show that the Warm is not the most active of all the principles which play a part in things governed by Nature. But if he was unable to demonstrate this any more than any of the previous propositions, then he ought not to have made himself ridiculous by quarrelling uselessly with a mere name — as though Aristotle had not clearly stated in the fourth book of his “Meteorology,” as well as in many other passages, in what way digestion can be said to be allied⁴⁰ to boiling, and also that the latter expression is not used in its primitive⁴¹ or strict sense.

But, as has been frequently said already, the one starting-point of all this is a thorough-going enquiry into the question of the Warm, Cold, Dry and Moist; this Aristotle carried out in the second of his books “On Genesis and Destruction,” where he shows that all the transmutations and alterations⁴² throughout the body take place as a result of these principles. Erasistratus, however, advanced nothing against these or anything else that has been said above, but occupied himself merely with the word “boiling.”

1 sufficiently   

adv.足够地，充分地

参考例句：

• It turned out he had not insured the house sufficiently.原来他没有给房屋投足保险。
• The new policy was sufficiently elastic to accommodate both views.新政策充分灵活地适用两种观点。

2 acting   

n.演戏，行为，假装；adj.代理的，临时的，演出用的

参考例句：

• Ignore her,she's just acting.别理她，她只是假装的。
• During the seventies,her acting career was in eclipse.在七十年代，她的表演生涯黯然失色。

3 appreciable   

adj.明显的，可见的，可估量的，可觉察的

参考例句：

• There is no appreciable distinction between the twins.在这对孪生子之间看不出有什么明显的差别。
• We bought an appreciable piece of property.我们买下的资产有增值的潜力。

4 subdue   

vt.制服，使顺从，征服；抑制，克制

参考例句：

• She tried to subdue her anger.她尽力压制自己的怒火。
• He forced himself to subdue and overcome his fears.他强迫自己克制并战胜恐惧心理。

5 subdued   

adj. 屈服的，柔和的，减弱的 动词subdue的过去式和过去分词

参考例句：

• He seemed a bit subdued to me. 我觉得他当时有点闷闷不乐。
• I felt strangely subdued when it was all over. 一切都结束的时候，我却有一种奇怪的压抑感。

6 alteration   

n.变更，改变；蚀变

参考例句：

• The shirt needs alteration.这件衬衣需要改一改。
• He easily perceived there was an alteration in my countenance.他立刻看出我的脸色和往常有些不同。

7 veins   

n.纹理；矿脉( vein的名词复数 )；静脉；叶脉；纹理

参考例句：

• The blood flows from the capillaries back into the veins. 血从毛细血管流回静脉。 来自《简明英汉词典》
• I felt a pleasant glow in all my veins from the wine. 喝过酒后我浑身的血都热烘烘的，感到很舒服。 来自《简明英汉词典》

8 arteries   

n.动脉( artery的名词复数 )；干线，要道

参考例句：

• Even grafting new blood vessels in place of the diseased coronary arteries has been tried. 甚至移植新血管代替不健康的冠状动脉的方法都已经试过。 来自《简明英汉词典》
• This is the place where the three main arteries of West London traffic met. 这就是伦敦西部三条主要交通干线的交汇处。 来自《简明英汉词典》

9 transmute   

vt.使变化，使改变

参考例句：

• We can transmute water power into electrical power.我们能将水力变成电力。
• A radioactive atom could transmute itself into an entirely different kind of atom.放射性原子本身能嬗变为性质完全不同的另一种原子。

10 intervals   

n.[军事]间隔( interval的名词复数 )；间隔时间；[数学]区间；（戏剧、电影或音乐会的）幕间休息

参考例句：

• The forecast said there would be sunny intervals and showers. 预报间晴，有阵雨。
• Meetings take place at fortnightly intervals. 每两周开一次会。

11 interval   

n.间隔，间距；幕间休息，中场休息

参考例句：

• The interval between the two trees measures 40 feet.这两棵树的间隔是40英尺。
• There was a long interval before he anwsered the telephone.隔了好久他才回了电话。

12 remains   

n.剩余物，残留物；遗体，遗迹

参考例句：

• He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
• The remains of the meal were fed to the dog.残羹剩饭喂狗了。

13 disintegrated   

v.（使）破裂[分裂，粉碎]，（使）崩溃( disintegrate的过去式和过去分词 )

参考例句：

• The plane disintegrated as it fell into the sea. 飞机坠入大海时解体了。
• The box was so old;it just disintegrated when I picked it up. 那箱子太破旧了，我刚一提就散了。 来自《简明英汉词典》

14 unripe   

adj.未成熟的；n.未成熟

参考例句：

• I was only ill once and that came of eating an unripe pear.我唯一一次生病是因为吃了未熟的梨。
• Half of the apples are unripe.一半的苹果不熟。

15 transmuting   

v.使变形，使变质，把…变成…( transmute的现在分词 )

参考例句：

• There are many recipes for transmuting items, so try many combinations. 合成物品有很多公式，所以尝试多种组合吧。 来自互联网
• Art is about creativity, transmuting the humblest subjects into the sublime. 艺术是一种创造力，能够把最卑贱的事物变得崇高庄严。 来自互联网

16 entirely   

ad.全部地，完整地；完全地，彻底地

参考例句：

• The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
• His life was entirely given up to the educational work. 他的一生统统献给了教育工作。

17 scorpions   

n.蝎子( scorpion的名词复数 )

参考例句：

• You promise me that Black Scorpions will never come back to Lanzhou. 你保证黑蝎子永远不再踏上兰州的土地。 来自电影对白
• You Scorpions are rather secretive about your likes and dislikes. 天蝎：蝎子是如此的神秘，你的喜好很难被别人洞悉。 来自互联网

18 venom   

n.毒液，恶毒，痛恨

参考例句：

• The snake injects the venom immediately after biting its prey.毒蛇咬住猎物之后马上注入毒液。
• In fact,some components of the venom may benefit human health.事实上，毒液的某些成分可能有益于人类健康。

19 masticated   

v.咀嚼( masticate的过去式和过去分词 )；粉碎，磨烂

参考例句：

20 secondly   

adv.第二，其次

参考例句：

• Secondly,use your own head and present your point of view.第二，动脑筋提出自己的见解。
• Secondly it is necessary to define the applied load.其次，需要确定所作用的载荷。

21 mere   

adj.纯粹的；仅仅，只不过

参考例句：

• That is a mere repetition of what you said before.那不过是重复了你以前讲的话。
• It's a mere waste of time waiting any longer.再等下去纯粹是浪费时间。

22 innate   

adj.天生的，固有的，天赋的

参考例句：

• You obviously have an innate talent for music.你显然有天生的音乐才能。
• Correct ideas are not innate in the mind.人的正确思想不是自己头脑中固有的。

23 hearths   

壁炉前的地板，炉床，壁炉边( hearth的名词复数 )

参考例句：

• The soldiers longed for their own hearths. 战士想家。
• In the hearths the fires down and the meat stopped cooking. 在壁炉的火平息和肉停止做饭。

24 previously   

adv.以前，先前（地）

参考例句：

• The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
• Let me digress for a moment and explain what had happened previously.让我岔开一会儿，解释原先发生了什么。

25 intestine   

adj.内部的；国内的；n.肠

参考例句：

• This vitamin is absorbed through the walls of the small intestine.这种维生素通过小肠壁被吸收。
• The service productivity is the function,including external efficiency,intestine efficiency and capacity efficiency.服务业的生产率是一个包含有外部效率、内部效率和能力效率的函数。

26 potent   

adj.强有力的，有权势的；有效力的

参考例句：

• The medicine had a potent effect on your disease.这药物对你的病疗效很大。
• We must account of his potent influence.我们必须考虑他的强有力的影响。

27 intestines   

n.肠( intestine的名词复数 )

参考例句：

• Perhaps the most serious problems occur in the stomach and intestines. 最严重的问题或许出现在胃和肠里。 来自辞典例句
• The traps of carnivorous plants function a little like the stomachs and small intestines of animals. 食肉植物的捕蝇器起着动物的胃和小肠的作用。 来自辞典例句

28 incapable   

adj.无能力的，不能做某事的

参考例句：

• He would be incapable of committing such a cruel deed.他不会做出这么残忍的事。
• Computers are incapable of creative thought.计算机不会创造性地思维。

29 digestion   

n.消化，吸收

参考例句：

• This kind of tea acts as an aid to digestion.这种茶可助消化。
• This food is easy of digestion.这食物容易消化。

30 nourishment   

n.食物，营养品；营养情况

参考例句：

• Lack of proper nourishment reduces their power to resist disease.营养不良降低了他们抵抗疾病的能力。
• He ventured that plants draw part of their nourishment from the air.他大胆提出植物从空气中吸收部分养分的观点。

31 vomited   

参考例句：

• Corbett leaned against the wall and promptly vomited. 科比特倚在墙边，马上呕吐了起来。
• She leant forward and vomited copiously on the floor. 她向前一俯，哇的一声吐了一地。 来自英汉文学

32 dissection   

n.分析；解剖

参考例句：

• A dissection of your argument shows several inconsistencies.对你论点作仔细分析后发现一些前后矛盾之处。
• Researchers need a growing supply of corpses for dissection.研究人员需要更多的供解剖用的尸体。

33 gastric   

adj.胃的

参考例句：

• Miners are a high risk group for certain types of gastric cancer.矿工是极易患某几种胃癌的高风险人群。
• That was how I got my gastric trouble.我的胃病就是这么得的。

34 sophistries   

n.诡辩术( sophistry的名词复数 )；（一次）诡辩

参考例句：

• They refuted the "sophistries of the economists". 他们驳斥了“经济学家们似是而非的观点”。 来自柯林斯例句

35 trifling   

adj.微不足道的；没什么价值的

参考例句：

• They quarreled over a trifling matter.他们为这种微不足道的事情争吵。
• So far Europe has no doubt, gained a real conveniency,though surely a very trifling one.直到现在为止,欧洲无疑地已经获得了实在的便利，不过那确是一种微不足道的便利。

36 virtue   

n.德行，美德；贞操；优点；功效，效力

参考例句：

• He was considered to be a paragon of virtue.他被认为是品德尽善尽美的典范。
• You need to decorate your mind with virtue.你应该用德行美化心灵。

37 transmuted   

v.使变形，使变质，把…变成…( transmute的过去式和过去分词 )

参考例句：

• It was once thought that lead could be transmuted into gold. 有人曾经认为铅可以变成黄金。
• They transmuted the raw materials into finished products. 他们把原料变为成品。 来自《现代英汉综合大词典》

38 postulate   

n.假定，基本条件；vt.要求，假定

参考例句：

• Let's postulate that she is a cook.我们假定她是一位厨师。
• Freud postulated that we all have a death instinct as well as a life instinct.弗洛伊德曾假定我们所有人都有生存本能和死亡本能。

39 audacity   

n.大胆，卤莽，无礼

参考例句：

• He had the audacity to ask for an increase in salary.他竟然厚着脸皮要求增加薪水。
• He had the audacity to pick pockets in broad daylight.他竟敢在光天化日之下掏包。

40 allied   

adj.协约国的；同盟国的

参考例句：

• Britain was allied with the United States many times in history.历史上英国曾多次与美国结盟。
• Allied forces sustained heavy losses in the first few weeks of the campaign.同盟国在最初几周内遭受了巨大的损失。

41 primitive   

adj.原始的；简单的；n.原(始)人，原始事物

参考例句：

• It is a primitive instinct to flee a place of danger.逃离危险的地方是一种原始本能。
• His book describes the march of the civilization of a primitive society.他的著作描述了一个原始社会的开化过程。

42 alterations   

n.改动( alteration的名词复数 )；更改；变化；改变

参考例句：

• Any alterations should be written in neatly to the left side. 改动部分应书写清晰，插在正文的左侧。 来自《简明英汉词典》
• Gene mutations are alterations in the DNA code. 基因突变是指DNA 密码的改变。 来自《简明英汉词典》