D. APPLETON & CO.'S PUBLICATIONS. 



THE GEOGRAPHICAL AND GEOtOGICAI. DISTRI- 

 BUTIOW OF ANIMALS. By Angelo Heilpein, Professor 

 of Invertebrate Paleontology at the Academy of Katural Sciences, 

 Philadelphia, etc. _12mo. $2.00. 



" An important contribution to physical science is Angelo Heilprin's ' Qeo- 

 grapbical and Geological Distribation of Animals.^ The author has aimed to 

 present to his readers such of the more significant facts connected with the past 

 and present distribution of animal life as might lead to a proper conception of 

 the relations of existing fauna, and also to furnish the student with a work of 

 general reference, wherein the more salient features of the geography and geolo- 

 gy of animal forms could he readily ascertained. While this book is addressed 

 chiefly to the naturalist, it contains much information, particularly on the sub- 

 ject of the geographical distribution of animals, the rapidly increasing growth of 

 some species and tbe gradual extinction of others, wnicb will interest and in- 

 struct the general reader. Mr. Heilprin is no believer in the doctrine of inde- 

 pendent creation, but holds that animate nature must he looked upon as a con- 

 crete whole."— iP«M York Sun, 



IHICROBES, FERMENTS, AND MOULDS. By E. L. Tkoues- 

 SABT. With 107 Illustrations. 12mo. Cloth, $1.60. 



"Microbes are everywhere ; every species of plant has its special parasites, 

 the vine having more than one hundred iocs of this kind. Fungi of a microecopic 

 size, they have their uses in nature, since they clear the surface of the earth from 

 dead bodies and fecal matter, from all dead and useless substances which are the 

 refuse of life, and return to the sou the soluble mineral euhstances from which 

 plants are derived^ All fermented liquors, wine, beer, vinegar, etc., are artificially 

 produced hy the species of microbes called ferments ; they also cause bread to 

 rise. Others are injurious to us, for in the shape of spores and seeds they enter 

 our bodies with air and water and cause a large number of the diseases to which 

 the flesh is heir. Many physicians do not accept the microbian theory, consider- 

 ing that when microbes are found in the blood they are neither the cause of the 

 disease, nor the contagious element, nor the vehicle of contagion. In France the 

 opponents of the microbian theory are Bobin, Bechamp, and Jousset de Bellgsme ; 

 in Bngland, Lewis and Lionel Beale. The writer comes to the conclusion that 

 Pasteur's microbian theory is the only one that explains all facts." — New York 

 Times. 



EARTHQUAKES AND OTHER EARTH MOVEMENTS. 



By John Milne, Professor of Mining and Geology in the Imperial 

 College of Engineering, Tokio, Japan. With 88 Illustrations. i2mo. 

 Cloth, $1.75. 



"In this little book Professor Milne has endeavored to bring together all that 

 is known concerning the nature and causes of earthquake movements. His task 

 was one of much difficulty. Professor Milne's excellent work in the science of 

 seismology has been done in Japan, in a resion of incessant shocks of sufficient 

 energy to make observation possible, yet, with rare exceptions, of no disastrous 

 efi'ects. He has had the good fortune to be aided by Mr. Thomas Gray, a gentle- 

 man of great constructive skill, as well as hy Professors J. A. Ewing, W. S. Chap- 

 lin, and his other colleagues in the scientific colony which has gathered about the 

 Imperial University of Japan. To these gentlemen we owe the best of our sci- 

 ence of seismology, for before their achievements we had nothing of value con- 

 cerning the physical conditions of earthquakes except the great works of Kohert 

 Mallet; and Mallet, with all tiis genius and devotion to the subject, had bnt few 

 chances to observe the actual shocks, and so failed to understand many of their 

 important features." — The Nation. 



New York: D. APPLETON & CO., 1, 3, & 5 Bond Street. 



