Book III chapter 12

Some animals have all the viscera that have been enumerated¹; others have only some of them. In what kind of animals this latter is the case, and what is the explanation, has already been stated. Moreover, the self-same viscera present differences in different possessors. For the heart is not precisely² alike in all animals that have one; nor, in fact, is any viscus whatsoever³. Thus the liver is in some animals split into several parts, while in others it is comparatively undivided. Such differences in its form present themselves even among those sanguineous animals that are viviparous, but are more marked in fishes and in the oviparous quadrupeds, and this whether we compare them with each other or with the Vivipara. As for birds, their liver very nearly resembles that of the Vivipara; for in them, as in these, it is of a pure and blood-like colour. The reason of this is that the body in both these classes of animals admits of the freest exhalation, so that the amount of foul⁵ residual⁶ matter within is but small. Hence it is that some of the Vivipara are without any gall-bladder at all. For the liver takes a large share in maintaining the purity of composition and the healthiness of the body. For these are conditions that depend finally and in the main upon the blood, and there is more blood in the liver than in any of the other viscera, the heart only excepted. On the other hand, the liver of oviparous quadrupeds and fishes inclines, as a rule, to a yellow hue⁷, and there are even some of them in which it is entirely⁸ of this bad colour, in accordance with the bad composition of their bodies generally. Such, for instance, is the case in the toad⁹, the tortoise, and other similar animals.

The spleen, again, varies in different animals. For in those that have horns and cloven hoofs¹⁰, such as the goat, the sheep, and the like, it is of a rounded form; excepting when increased size has caused some part of it to extend its growth longitudinally, as has happened in the case of the ox. On the other hand, it is elongated¹¹ in all polydactylous animals. Such, for instance, is the case in the pig, in man, and in the dog. While in animals with solid hoofs it is of a form intermediate to these two, being broad in one part, narrow in another. Such, for example, is its shape in the horse, the mule¹², and the ass⁴.

1 enumerated   

v.列举，枚举，数( enumerate的过去式和过去分词 )

参考例句：

• A spokesperson enumerated the strikers' demands. 发言人列数罢工者的要求。 来自《简明英汉词典》
• He enumerated the capitals of the 50 states. 他列举了50个州的首府。 来自《现代汉英综合大词典》

2 precisely   

adv.恰好，正好，精确地，细致地

参考例句：

• It's precisely that sort of slick sales-talk that I mistrust.我不相信的正是那种油腔滑调的推销宣传。
• The man adjusted very precisely.那个人调得很准。

3 whatsoever   

adv.（用于否定句中以加强语气）任何；pron.无论什么

参考例句：

• There's no reason whatsoever to turn down this suggestion.没有任何理由拒绝这个建议。
• All things whatsoever ye would that men should do to you,do ye even so to them.你想别人对你怎样，你就怎样对人。

4 ass   

n.驴；傻瓜，蠢笨的人

参考例句：

• He is not an ass as they make him.他不象大家猜想的那样笨。
• An ass endures his burden but not more than his burden.驴能负重但不能超过它能力所负担的。

5 foul   

adj.污秽的；邪恶的；v.弄脏；妨害；犯规；n.犯规

参考例句：

• Take off those foul clothes and let me wash them.脱下那些脏衣服让我洗一洗。
• What a foul day it is!多么恶劣的天气！

6 residual   

adj.复播复映追加时间；存留下来的，剩余的

参考例句：

• There are still a few residual problems with the computer program.电脑程序还有一些残留问题。
• The resulting residual chromatism is known as secondary spectrum.所得到的剩余色差叫做二次光谱。

7 hue   

n.色度；色调；样子

参考例句：

• The diamond shone with every hue under the sun.金刚石在阳光下放出五颜六色的光芒。
• The same hue will look different in different light.同一颜色在不同的光线下看起来会有所不同。

8 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。

9 toad   

n.蟾蜍，癞蛤蟆

参考例句：

• Both the toad and frog are amphibian.蟾蜍和青蛙都是两栖动物。
• Many kinds of toad hibernate in winter.许多种蟾蜍在冬天都会冬眠。

10 hoofs   

n.（兽的）蹄，马蹄( hoof的名词复数 )v.（兽的）蹄，马蹄( hoof的第三人称单数 )

参考例句：

• The stamp of the horse's hoofs on the wooden floor was loud. 马蹄踏在木头地板上的声音很响。 来自辞典例句
• The noise of hoofs called him back to the other window. 马蹄声把他又唤回那扇窗子口。 来自辞典例句

11 elongated   

v.延长，加长( elongate的过去式和过去分词 )

参考例句：

• Modigliani's women have strangely elongated faces. 莫迪里阿尼画中的妇女都长着奇长无比的脸。
• A piece of rubber can be elongated by streching. 一块橡皮可以拉长。 来自《用法词典》

12 mule   

n.骡子，杂种，执拗的人

参考例句：

• A mule is a cross between a mare and a donkey.骡子是母马和公驴的杂交后代。
• He is an old mule.他是个老顽固。