PREFACE.

A tour round the South American continent, which was completed in so short a time as five months, may not appear to deserve any special record; yet I am led to hope that this little book may serve to induce others to visit a region so abounding¹ in sources of enjoyment² and interest. There is no part of the world where, in the same short space of time, a traveller can view so many varied³ and impressive aspects of nature; while he whose attention is mainly given to the progress and development of the social condition of mankind will find in the condition of the numerous states of the continent, and the manners and habits of the many different races that inhabit it, abundant material to engage his attention and excite his interest.

Although, as the title implies, the aim of my journey was mainly directed to the new aspects of nature, organic and inorganic⁴, which South America superabundantly presents to the stranger, I have not thought it without interest to give in these pages theviii impressions as to the social and political condition of the different regions which I visited, suggested to an unprejudiced visitor by the daily incidents of a traveller’s life.

Those who may be tempted⁵ to undertake a tour in South America will find that by a judicious⁶ choice of route, according to the season selected for travelling, they may visit all the accessible parts of the continent with perfect ease, and with no more risk of injury to health, or of bodily discomfort⁷, than they incur⁸ in a summer excursion in Europe. The chief precaution to be observed is to make the visit to Brazil fall in the cool and dry season, extending from mid-May to September. It may also be well to mention that, while the cost of passage and expenses on board, for a journey of about 18,400 miles by sea, somewhat exceeded ￡170, my expenses during about ten weeks on land, without any attempt at economy, did not exceed ￡100.

The reader may regard as superfluous⁹ the rather frequent references to the meteorology of the various parts of the continent which I was able to visit. But, if he will consider the importance of the two main elements—temperature and moisture—in regulating the development of organic life in past epochs, and the influence which they now exercise on the character of the human population, he will admit that a student of nature could not fail to make them the objects of frequent attention, the more especially as many erroneous impressions as to the climate of various partsix of South America are still current, even among men of science.

I make no pretension¹¹ to add anything of importance to our store of positive knowledge respecting the region described in this volume; I shall be content if it should be found that I have suggested trains of thought that may lead others to valuable results. I venture, indeed, to believe that the argument adduced in the sixth chapter, as to the great extent and importance of the ancient mountains of Brazil, approaches near to demonstration¹², and that the recognition of its validity will be found to throw fresh light on the history of organic life in that region of the globe.

In the Appendices to this volume two subjects of a somewhat technical character, not likely to interest the general reader, are separately discussed. With regard to both of them, my aim has been to show that the opinions now current amongst men of science do not rest upon adequate evidence, and that we need further knowledge of the phenomena¹³, discoverable by observation, before we can safely arrive at positive conclusions.

In deference¹⁴ to the prejudices of English readers, which are unfortunately shared by many scientific writers, the ordinary British standards of measure and weight have been followed throughout the text, as well as the antiquated¹⁵ custom of denoting temperature by the scale of Fahrenheit¹⁶’s thermometer. With regard to the metrical system of measures and weights, I am fully¹⁷ aware of its imperfections, and if thex question were now raised for the first time I should advocate the adoption¹⁸ of some considerable modifications¹⁹. But seeing that no other uniform system is in existence, and that the metrical system has been adopted by nearly all civilized²⁰ nations, I cannot but regret that my countrymen should retain what is practically a barrier to the free interchange of thought with the rest of the world. The defects of the metrical system are mainly those of our decimal system of numeration, which owes its existence to the fact that the human hand possesses five fingers. If in some future stage of development our race should acquire a sixth finger to each hand, it may then also acquire a more convenient system of numeration, to which the scale of measures would naturally be adapted. In the mean time the advantages of a uniform system far outweigh²¹ its attendant defects.

The adherence²² to the Fahrenheit scale for the thermometer is even less defensible. It belongs to a primitive²³ epoch¹⁰ of science, when a knowledge of the facts of physics was in a rudimentary stage, and its survival at the present day is a matter of marvel²⁴ to the student of progress.

I should not conclude these prefatory words without expressing my obligations to many scientific friends whom I have from time to time consulted with advantage; and I must especially record my obligation to Mr. Robert Scott, F.R.S., who has on many occasions been my guide to the valuable materials available in the library of the Meteorological Office.

1 abounding   

adj.丰富的，大量的v.大量存在，充满，富于( abound的现在分词 )

参考例句：

• Ahead lay the scalloped ocean and the abounding blessed isles. 再往前是水波荡漾的海洋和星罗棋布的宝岛。 来自英汉文学 - 盖茨比
• The metallic curve of his sheep-crook shone silver-bright in the same abounding rays. 他那弯柄牧羊杖上的金属曲线也在这一片炽盛的火光下闪着银亮的光。 来自辞典例句

2 enjoyment   

n.乐趣；享有；享用

参考例句：

• Your company adds to the enjoyment of our visit. 有您的陪同，我们这次访问更加愉快了。
• After each joke the old man cackled his enjoyment.每逢讲完一个笑话，这老人就呵呵笑着表示他的高兴。

3 varied   

adj.多样的，多变化的

参考例句：

• The forms of art are many and varied.艺术的形式是多种多样的。
• The hotel has a varied programme of nightly entertainment.宾馆有各种晚间娱乐活动。

4 inorganic   

adj.无生物的；无机的

参考例句：

• The fundamentals of inorganic chemistry are very important.无机化学的基础很重要。
• This chemical plant recently bought a large quantity of inorganic salt.这家化工厂又买进了大量的无机盐。

5 tempted   

v.怂恿（某人）干不正当的事；冒…的险（tempt的过去分词）

参考例句：

• I was sorely tempted to complain, but I didn't. 我极想发牢骚，但还是没开口。
• I was tempted by the dessert menu. 甜食菜单馋得我垂涎欲滴。

6 judicious   

adj.明智的，明断的，能作出明智决定的

参考例句：

• We should listen to the judicious opinion of that old man.我们应该听取那位老人明智的意见。
• A judicious parent encourages his children to make their own decisions.贤明的父亲鼓励儿女自作抉择。

7 discomfort   

n.不舒服，不安，难过，困难，不方便

参考例句：

• One has to bear a little discomfort while travelling.旅行中总要忍受一点不便。
• She turned red with discomfort when the teacher spoke.老师讲话时她不好意思地红着脸。

8 incur   

vt.招致，蒙受，遭遇

参考例句：

• Any costs that you incur will be reimbursed in full.你的所有花费都将全额付还。
• An enterprise has to incur certain costs and expenses in order to stay in business.一个企业为了维持营业,就不得不承担一定的费用和开支。

9 superfluous   

adj.过多的，过剩的，多余的

参考例句：

• She fined away superfluous matter in the design. 她删去了这图案中多余的东西。
• That request seemed superfluous when I wrote it.我这样写的时候觉得这个请求似乎是多此一举。

10 epoch   

n.(新)时代；历元

参考例句：

• The epoch of revolution creates great figures.革命时代造就伟大的人物。
• We're at the end of the historical epoch,and at the dawn of another.我们正处在一个历史时代的末期，另一个历史时代的开端。

11 pretension   

n.要求；自命，自称；自负

参考例句：

• I make no pretension to skill as an artist,but I enjoy painting.我并不自命有画家的技巧，但我喜欢绘画。
• His action is a satire on his boastful pretension.他的行动是对他自我卖弄的一个讽刺。

12 demonstration   

n.表明，示范，论证，示威

参考例句：

• His new book is a demonstration of his patriotism.他写的新书是他的爱国精神的证明。
• He gave a demonstration of the new technique then and there.他当场表演了这种新的操作方法。

13 phenomena   

n.现象

参考例句：

• Ade couldn't relate the phenomena with any theory he knew.艾德无法用他所知道的任何理论来解释这种现象。
• The object of these experiments was to find the connection,if any,between the two phenomena.这些实验的目的就是探索这两种现象之间的联系，如果存在着任何联系的话。

14 deference   

n.尊重，顺从；敬意

参考例句：

• Do you treat your parents and teachers with deference?你对父母师长尊敬吗？
• The major defect of their work was deference to authority.他们的主要缺陷是趋从权威。

15 antiquated   

adj.陈旧的，过时的

参考例句：

• Many factories are so antiquated they are not worth saving.很多工厂过于陈旧落后，已不值得挽救。
• A train of antiquated coaches was waiting for us at the siding.一列陈旧的火车在侧线上等着我们。

16 Fahrenheit   

n./adj.华氏温度；华氏温度计(的)

参考例句：

• He was asked for the boiling point of water in Fahrenheit.他被问到水的沸点是华氏多少度。
• The thermometer reads 80 degrees Fahrenheit.寒暑表指出华氏80度。

17 fully   

adv.完全地，全部地，彻底地；充分地

参考例句：

• The doctor asked me to breathe in,then to breathe out fully.医生让我先吸气，然后全部呼出。
• They soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。

18 adoption   

n.采用，采纳，通过；收养

参考例句：

• An adoption agency had sent the boys to two different families.一个收养机构把他们送给两个不同的家庭。
• The adoption of this policy would relieve them of a tremendous burden.采取这一政策会给他们解除一个巨大的负担。

19 modifications   

n.缓和( modification的名词复数 )；限制；更改；改变

参考例句：

• The engine was pulled apart for modifications and then reassembled. 发动机被拆开改型，然后再组装起来。 来自《简明英汉词典》
• The original plan had undergone fairly extensive modifications. 原计划已经作了相当大的修改。 来自《简明英汉词典》

20 civilized   

a.有教养的，文雅的

参考例句：

• Racism is abhorrent to a civilized society. 文明社会憎恶种族主义。
• rising crime in our so-called civilized societies 在我们所谓文明社会中日益增多的犯罪行为

21 outweigh   

vt.比...更重，...更重要

参考例句：

• The merits of your plan outweigh the defects.你制定的计划其优点胜过缺点。
• One's merits outweigh one's short-comings.功大于过。

22 adherence   

n.信奉，依附，坚持，固着

参考例句：

• He was well known for his adherence to the rules.他因遵循这些规定而出名。
• The teacher demanded adherence to the rules.老师要求学生们遵守纪律。

23 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。

24 marvel   

vi.(at)惊叹vt.感到惊异；n.令人惊异的事

参考例句：

• The robot is a marvel of modern engineering.机器人是现代工程技术的奇迹。
• The operation was a marvel of medical skill.这次手术是医术上的一个奇迹。