Editions Le Mono imprint: 218 books

-Aspects of Nature in the African Sahara- "With all the wild, fitful, and forbidding Nature that belongs to the Sahara, it has also its elements of peace and good will. The cheer of a green oasis is, indeed, one of its first greetings, and long before the great flat expanse of sand is...

The Ohio state lies between 38°27', and 41°57' north latitude; it is bounded by the meridians reading 80°34' and 84°49'. For its width in latitude and its lack of great range in altitude, it has a marked range in mean annual temperature; in southern Ohio the mean annual range is 54°, while in...

This book presents the history of the Development of Iron and Steel Industry in America since Columbus. "All authorities agree in the opinion that iron was unknown to the aboriginal inhabitants of America. Tools, weapons, ornaments, and culinary vessels made of copper were occasionally found...

Henri Poincaré was a famous mathematician, theoretical physicist, and philosopher. "Think of two consciousnesses, which are like two worlds impenetrable one to the other. By what right do we strive to put them into the same mold, to measure them by the same standard? Is it not as if one strove...

The progress of engineering works has already in our time been prodigious. As to the future, we know we cannot create a force; we can, and no doubt shall, greatly improve the application of those with which we are acquainted. What we called inventions can do no more than this, yet how much every day...

"At the end of the century, journalism is the history of the world written day by day, the chief medium of enlightenment for the masses, the universal forum of scholar, sage, and scientist. As a business enterprise, the newspaper of today commands unlimited capital, and as a profession it ranks second to none..."

Alexandre Dumas was one of the most widely read French authors in the world.

Sleep as a factor in physical economics ranks in importance with respiration and digestion. Those who live normally, who throughout all ordinary exigencies maintain a natural attitude toward life, its strains and responsibilities, may expect to enjoy a full measure of this restorative function ...

"Life in general is possible only between certain limits of temperature; and life of the higher kinds is possible only within a comparatively narrow range of temperature, maintained artificially if not naturally. Hence it results that social life, presupposing as it does not only human life,...

"The hypothesis that music had its origin in the amatory sounds made by the male to charm the female, has the support of the popular idea that the singing of birds constitutes a kind of courtship—an idea adopted by Mr. Darwin when he says that "the male pours forth his full volume of song, in rivalry with other males, for the sake of captivating the female."...

Immanuel Kant and the Critical Philosophy. "The critical philosophy has nothing to do with a theory of the evolution of knowledge, in the modern sense of the word. Its distinctive task is to discover the necessary principles which must be presupposed—howsoever human nature may be constituted—if...

Some people held the earth to be hemispherical, and to be supported like a boat turned upside down upon the heads of four elephants, which stood on the back of an immense tortoise. Other primitive ideas represented the earth as a vast plain or flat island, surrounded on all sides by an inaccessible...

Copernicus was the first scientist who found that earth revolves around the sun. "Modern astronomy may be said to have begun with Copernicus. Previous to his time the received theories of the structure and motions of the universe were incorrect, inconsistent, and incomprehensible, and did not...

Caligula was Emperor of Rome from A.D. 37 to 41. He was the youngest son of Germanicus (nephew of Tiberius) by Agrippina, and was born August 31, A.D. 12, at Antium, and was educated in the camp, where the soldiers gave him the nickname Caligula, from the military boots (caligæ) which he wore... "The...