Book I chapter 4

It deserves inquiry¹ why a single name denoting a higher group was not invented by mankind, as an appellation² to comprehend the two groups of Water animals and Winged animals. For even these have certain attributes in common. However, the present nomenclature is just. Groups that only differ in degree, and in the more or less of an identical element that they possess, are aggregated³ under a single class; groups whose attributes are not identical but analogous⁴ are separated. For instance, bird differs from bird by gradation, or by excess and defect; some birds have long feathers, others short ones, but all are feathered. Bird and Fish are more remote and only agree in having analogous organs; for what in the bird is feather, in the fish is scale. Such analogies can scarcely, however, serve universally as indications for the formation of groups, for almost all animals present analogies in their corresponding parts.

The individuals comprised within a species, such as Socrates and Coriscus, are the real existences; but inasmuch as these individuals possess one common specific form, it will suffice to state the universal attributes of the species, that is, the attributes common to all its individuals, once for all, as otherwise there will be endless reiteration⁵, as has already been pointed⁶ out.

But as regards the larger groups-such as Birds-which comprehend many species, there may be a question. For on the one hand it may be urged that as the ultimate species represent the real existences, it will be well, if practicable, to examine these ultimate species separately, just as we examine the species Man separately; to examine, that is, not the whole class Birds collectively, but the Ostrich⁷, the Crane, and the other indivisible groups or species belonging to the class.

On the other hand, however, this course would involve repeated mention of the same attribute, as the same attribute is common to many species, and so far would be somewhat irrational⁸ and tedious. Perhaps, then, it will be best to treat generically⁹ the universal attributes of the groups that have a common nature and contain closely allied¹⁰ subordinate forms, whether they are groups recognized by a true instinct of mankind, such as Birds and Fishes, or groups not popularly known by a common appellation, but withal composed of closely allied subordinate groups; and only to deal individually with the attributes of a single species, when such species, man, for instance, and any other such, if such there be-stands apart from others, and does not constitute with them a larger natural group.

It is generally similarity in the shape of particular organs, or of the whole body, that has determined¹¹ the formation of the larger groups. It is in virtue¹² of such a similarity that Birds, Fishes, Cephalopoda, and Testacea have been made to form each a separate class. For within the limits of each such class, the parts do not differ in that they have no nearer resemblance than that of analogy-such as exists between the bone of man and the spine¹³ of fish-but differ merely in respect of such corporeal¹⁴ conditions as largeness smallness, softness hardness, smoothness roughness, and other similar oppositions¹⁵, or, in one word, in respect of degree.

We have now touched upon the canons for criticizing the method of natural science, and have considered what is the most systematic¹⁶ and easy course of investigation¹⁷; we have also dealt with division, and the mode of conducting it so as best to attain¹⁸ the ends of science, and have shown why dichotomy is either impracticable or inefficacious for its professed¹⁹ purposes.

Having laid this foundation, let us pass on to our next topic.

1 inquiry   

n.打听，询问，调查，查问

参考例句：

• Many parents have been pressing for an inquiry into the problem.许多家长迫切要求调查这个问题。
• The field of inquiry has narrowed down to five persons.调查的范围已经缩小到只剩5个人了。

2 appellation   

n.名称，称呼

参考例句：

• The emperor of Russia Peter I was given the appellation " the Great ".俄皇彼得一世被加上了“大帝”的称号。
• Kinsfolk appellation is the kinfolks system reflection in language.亲属称谓是亲属制度在语言中的反应。

3 aggregated   

a.聚合的，合计的

参考例句：

• He aggregated her to a political party. 他吸收她参加一政党。
• The audiences aggregated a million people. 观众总数达100万人。

4 analogous   

adj.相似的；类似的

参考例句：

• The two situations are roughly analogous.两种情況大致相似。
• The company is in a position closely analogous to that of its main rival.该公司与主要竞争对手的处境极为相似。

5 reiteration   

n. 重覆, 反覆, 重说

参考例句：

• The reiteration of this figure, more than anything else, wrecked the conservative chance of coming back. 重申这数字，比其它任何事情更能打消保守党重新上台的机会。
• The final statement is just a reiteration of U.S. policy on Taiwan. 艾瑞里？最后一个声明只是重复宣读美国对台政策。

6 pointed   

adj.尖的，直截了当的

参考例句：

• He gave me a very sharp pointed pencil.他给我一支削得非常尖的铅笔。
• She wished to show Mrs.John Dashwood by this pointed invitation to her brother.她想通过对达茨伍德夫人提出直截了当的邀请向她的哥哥表示出来。

7 ostrich   

n.鸵鸟

参考例句：

• Ostrich is the fastest animal on two legs.驼鸟是双腿跑得最快的动物。
• The ostrich indeed inhabits continents.鸵鸟确实是生活在大陆上的。

8 irrational   

adj.无理性的，失去理性的

参考例句：

• After taking the drug she became completely irrational.她在吸毒后变得完全失去了理性。
• There are also signs of irrational exuberance among some investors.在某些投资者中是存在非理性繁荣的征象的。

9 generically   

adv.一般地

参考例句：

• The so-called critics are generically mentioned, but not individually mentioned. 当所谓的批评提及时总是一笔带过，从不指名道姓。 来自互联网
• We market these drugs generically. 我们推广的这些药是未经注册的。 来自互联网

10 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。

11 determined   

adj.坚定的；有决心的

参考例句：

• I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
• He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。

12 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。

13 spine   

n.脊柱，脊椎；(动植物的)刺；书脊

参考例句：

• He broke his spine in a fall from a horse.他从马上跌下摔断了脊梁骨。
• His spine developed a slight curve.他的脊柱有点弯曲。

14 corporeal   

adj.肉体的，身体的；物质的

参考例句：

• The body is the corporeal habitation of the soul.身体为灵魂之有形寓所。
• He is very religious;corporeal world has little interest for him.他虔信宗教，对物质上的享受不感兴趣。

15 oppositions   

（强烈的）反对( opposition的名词复数 )； 反对党； （事业、竞赛、游戏等的）对手； 对比

参考例句：

• That's fine because all perihelic oppositions of Mars are spectacular. 但它和最近的几次区别不大，因为火星所有的近日对冲都很壮观。
• He tried his best to bear down all of his oppositions. 他尽全力击败一切反对意见。

16 systematic   

adj.有系统的，有计划的，有方法的

参考例句：

• The way he works isn't very systematic.他的工作不是很有条理。
• The teacher made a systematic work of teaching.这个教师进行系统的教学工作。

17 investigation   

n.调查，调查研究

参考例句：

• In an investigation,a new fact became known, which told against him.在调查中新发现了一件对他不利的事实。
• He drew the conclusion by building on his own investigation.他根据自己的调查研究作出结论。

18 attain   

vt.达到，获得，完成

参考例句：

• I used the scientific method to attain this end. 我用科学的方法来达到这一目的。
• His painstaking to attain his goal in life is praiseworthy. 他为实现人生目标所下的苦功是值得称赞的。

19 professed   

公开声称的，伪称的，已立誓信教的

参考例句：

• These, at least, were their professed reasons for pulling out of the deal. 至少这些是他们自称退出这宗交易的理由。
• Her manner professed a gaiety that she did not feel. 她的神态显出一种她并未实际感受到的快乐。