PREFACE.

 The explanations given in the following pages, in which I have sought to show the manner in which an ice age is being brought about, is an extension of a treatise¹ on “The Cause of Warm and Frigid² Periods,” which I published in a small edition in 1894. And, from the small number of copies circulated, only a few came to the hands of persons particularly interested in such matter. Yet there were instances of its having proved of special interest to persons celebrated³ for their geological attainments⁴, and also to instructors⁵ in physical geography. Besides, it received considerate notice in some of the leading reviews. Being thus somewhat encouraged, and thinking that the subject was too important to be neglected, I have given it further study during the last year, and meanwhile have obtained additional information from recent discoveries which has served to corroborate⁶ my views. Hence I have been able to be more explicit⁷ in my explanations in the present volume than in my earlier writings. Still, while acting⁸ as a pioneer in the matter, it will be seen that I have only attempted to expose the main outlines, as my age and failing health will not permit me to enter into the voluminous details necessary for a full explanation. In order to show why my attention has been turned to the great climatic changes which have taken place during past ages, and now threaten the future, I will repeat the introduction of my earlier publication, wherein I wrote that “the reason why I have undertaken to explain the causes which have brought about the warm and cold epochs is because of my being unable to harmonize the several theories4 that have been published with the general mode of action which nature pursues to-day. Having in the early part of my life been employed for a score of years in the whaling service, during which time my sea voyages were passed in cruising over the North and South Atlantic, and over the Indian Ocean, from latitudes⁹ north of the equator to the southern shores of Kerguelen Land, and along the seas of Southern Australia, I also, in my searching, cruised over the Pacific Ocean from the icy seas south of Cape¹⁰ Horn to the northern latitudes of Alaska, and, from New Zealand in the Western Pacific to the numerous islands in the tropical zone. And it may be said that among the chief things to be learned on such voyages was the direction of the prevailing¹¹ winds and surface currents of the sea. Thus the impressions then received were in mind when, in after years, I had my attention drawn¹² to the several theories advanced for explaining the causes which produced the warm and frigid epochs. But, so far as my marine¹³ experience goes, such theories have not harmonized with nature’s mode of operating at this age of the world. Therefore, I have conceived views which, to my mind, are more agreeable to the simple operations of nature of which I have long been witness. Consequently, I have written several short essays on climatic changes since 1880, and also letters relating to the same subject, which have been published in Science and Scientific American. But the space allowed for the introduction of such matter was necessarily too limited for so wide an explanation as the subject required. The views then advanced I have again repeated, with the addition of several facts pertaining¹⁴ to physical geography, which, so far as I know, have never before been published.”

Wakefield, Mass., U.S.A.

June, 1896.

 

1 treatise   

n.专著；(专题)论文

参考例句：

• The doctor wrote a treatise on alcoholism.那位医生写了一篇关于酗酒问题的论文。
• This is not a treatise on statistical theory.这不是一篇有关统计理论的论文。

2 frigid   

adj.寒冷的，凛冽的；冷淡的；拘禁的

参考例句：

• The water was too frigid to allow him to remain submerged for long.水冰冷彻骨，他在下面呆不了太长时间。
• She returned his smile with a frigid glance.对他的微笑她报以冷冷的一瞥。

3 celebrated   

adj.有名的，声誉卓著的

参考例句：

• He was soon one of the most celebrated young painters in England.不久他就成了英格兰最负盛名的年轻画家之一。
• The celebrated violinist was mobbed by the audience.观众团团围住了这位著名的小提琴演奏家。

4 attainments   

成就，造诣； 获得( attainment的名词复数 )； 达到； 造诣； 成就

参考例句：

• a young woman of impressive educational attainments 一位学业成就斐然的年轻女子
• He is a scholar of the highest attainments in this field. 他在这一领域是一位颇有造就的学者。

5 instructors   

指导者，教师( instructor的名词复数 )

参考例句：

• The instructors were slacking on the job. 教员们对工作松松垮垮。
• He was invited to sit on the rostrum as a representative of extramural instructors. 他以校外辅导员身份，被邀请到主席台上。

6 corroborate   

v.支持，证实，确定

参考例句：

• He looked at me anxiously,as if he hoped I'd corroborate this.他神色不安地看着我，仿佛他希望我证实地的话。
• It appeared that what he said went to corroborate my account.看来他所说的和我叙述的相符。

7 explicit   

adj.详述的，明确的；坦率的；显然的

参考例句：

• She was quite explicit about why she left.她对自己离去的原因直言不讳。
• He avoids the explicit answer to us.他避免给我们明确的回答。

8 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。

9 latitudes   

纬度

参考例句：

• Latitudes are the lines that go from east to west. 纬线是从东到西的线。
• It was the brief Indian Summer of the high latitudes. 这是高纬度地方的那种短暂的晚秋。

10 cape   

n.海角，岬；披肩，短披风

参考例句：

• I long for a trip to the Cape of Good Hope.我渴望到好望角去旅行。
• She was wearing a cape over her dress.她在外套上披着一件披肩。

11 prevailing   

adj.盛行的；占优势的；主要的

参考例句：

• She wears a fashionable hair style prevailing in the city.她的发型是这个城市流行的款式。
• This reflects attitudes and values prevailing in society.这反映了社会上盛行的态度和价值观。

12 drawn   

v.拖，拉，拔出；adj.憔悴的，紧张的

参考例句：

• All the characters in the story are drawn from life.故事中的所有人物都取材于生活。
• Her gaze was drawn irresistibly to the scene outside.她的目光禁不住被外面的风景所吸引。

13 marine   

adj.海的；海生的；航海的；海事的；n.水兵

参考例句：

• Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
• When the war broke out,he volunteered for the Marine Corps.战争爆发时，他自愿参加了海军陆战队。

14 pertaining   

与…有关系的，附属…的，为…固有的(to)

参考例句：

• Living conditions are vastly different from those pertaining in their country of origin. 生活条件与他们祖国大不相同。
• The inspector was interested in everything pertaining to the school. 视察员对有关学校的一切都感兴趣。