Our website is made possible by displaying online advertisements to our visitors.
Please consider supporting us by disabling your ad blocker.

Download links will be available after you disable the ad blocker and reload the page.
Showing: 1-10 results of 13

LETTER 378. J.D. HOOKER TO CHARLES DARWIN. Kew, January 20th, 1867. Prof. Miquel, of Utrecht, begs me to ask you for your carte, and offers his in return. I grieve to bother you on such a subject. I am sick and tired of this carte correspondence. I cannot conceive what Humboldt's Pyrenean violet is: no such is mentioned in Webb, and no alpine one at all. I am sorry I forgot to mention the stronger African affinity of the eastern Canary Islands.... more...

THE WORLD OF COLD AND DARKNESS I date my birth into the world of sweetness and light on one frosty morning in January, 1857, when I took my seat between two well-known mathematicians, before a blazing fire in the office of the "Nautical Almanac" at Cambridge, Mass. I had come on from Washington, armed with letters from Professor Henry and Mr. Hilgard, to seek a trial as an astronomical computer. The men beside me were Professor Joseph Winlock,... more...

CHAPTER I. Peculiar interest attached to his Life—His Birth—His early studies—His passion for Mathematics—His work on the Hydrostatic Balance—Appointed Lecturer on Mathematics at Pisa—His antipathy to the Philosophy of Aristotle—His contentions with the Aristotelians—Chosen professor of Mathematics in Padua—Adopts the Copernican system, but still teaches the Ptolemaic doctrine—His... more...

SIR ISAAC NEWTON   n honest farmer, neither rich nor poor, was Isaac Newton. He was married to Harriet Ayscough in February, Sixteen Hundred Forty-two. Both were strong, intelligent and full of hope. Neither had any education to speak of; they belonged to England's middle class—that oft-despised and much ridiculed middle class which is the hope of the world. Accounts still in existence show that their income was thirty pounds a... more...

CHAPTER I EARLY DAYS AT KIRKCALDY 1723-1737   Adam Smith was born at Kirkcaldy, in the county of Fife, Scotland, on the 5th of June 1723. He was the son of Adam Smith, Writer to the Signet, Judge Advocate for Scotland and Comptroller of the Customs in the Kirkcaldy district, by Margaret, daughter of John Douglas of Strathendry, a considerable landed proprietor in the same county. Of his father little is known. He was a native of... more...


PREFACE No attempt is made in the following pages to submit to historical treatment the vast and varied mass of printed matter which Cardan left as his contribution to letters and science, except in the case of those works which are, in purpose or incidentally, autobiographical, or of those which furnish in themselves effective contributions towards the framing of an estimate of the genius and character of the writer. Neither has it seemed worth... more...

It is scarcely conceivable that anything pertaining to the development of chemical science in America would fail to interest its chemists. The response to the needs of the Nation in the last few years has shown how marvelously they wrought and the wonderful things which they brought to light. Yet in the long ago—in the days of which we only know by hearsay, and through desultory reading, there lived chemists with enthusiasm, knowledge and... more...

Chapter 1. Parentage: introduction to the royal institution: earliestexperiments: first royal society paper: marriage. It has been thought desirable to give you and the world some image of MICHAEL FARADAY, as a scientific investigator and discoverer. The attempt to respond to this desire has been to me a labour of difficulty, if also a labour of love. For however well acquainted I may be with the researches and discoveries of that great... more...

INTRODUCTION. Humphry Davy was born at Penzance, in Cornwall, on the 17th of December, 1778, and died at Geneva on the 29th of May, 1829, at the age of fifty.  He was a philosopher who turned knowledge to wisdom; he was one of the foremost of our English men of science; and this book, written when he was dying, which makes Reason the companion of Faith, shows how he passed through the light of earth into the light of heaven. His father had... more...

Gentlemen,—The learned man, illustrious in so many ways, whose life I am going to relate, was taken from France half a century ago. I hasten to make this remark, so as thoroughly to show that I have selected this subject without being deterred by complaints which I look upon as unjust and inapplicable. The glory of the members of the early Academy of Sciences is an inheritance for the present Academy. We must cherish it as we would the... more...