D. APPLE TON & CO/S PUBLICATIONS. 



THE GEOGRAPHICAL AND GEOLOGICAL DISTRI- 

 BUTION OF ANIMALS. By Angelo Heilprin, Professor 

 of Invertebrate Paleontology at the Academy of Isatural Sciences, 

 Philadelphia, etc. 12mo. $2.00. 



" An important contrihation to physical science is Angelo Heilprin's 'Geo- 

 grapliical and Geological Distribuliou of Animals.'' The author has aimed to 

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

 and pre-eni distribation of animal life as might lead to a proper concejdiou of 

 the relations of existinir fauna, and also to luriiisii the s-ludent with a work of 

 goaeral reference, wherein the more i=alient features of the geography and geolo- 

 gy ot animal forms could be readily ascertained. While iliis book is arldressed 

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

 ject of the geo^rapiiical distribution of animals, the rapioly increasing growih of 

 some species and the gradual extinction of otherf', whith will interest and in- 

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

 pcsiident creation, but ho'ds that animate nature must be looked upon as a con- 

 crete whole."— A^eu* Yoric Sun. 



MICROBES, FERMENTS, AND MOULDS. By E. L. Troues- 

 SARf. With 107 Illustrations. 12mo. Cloth, $1.50. 



"Microbes are everywhere ; every species of plant hap its special parasite?, 

 the vine having more than one luindrerl foes oi this kind. Fungi of a nucrcccopic 

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

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

 refus3 of life, and return to the soil the >oluble mineral substances fr< m which 

 plants are derived. AH fermented liquors, wine, beer. vine<.ar, etc., are artificially- 

 produced by 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 witli air and water and caut^e a large nunber ot the diseases to whi( h 

 the flosh is hsir. Many physicians do not accept the niicrob.an theory, consider- 

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

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

 opponents of the microhian theory are Robin. Hechamp. and Jcusset deBellesme; 

 in England, Lewis and Lionel Beale. The writer <omes to the conclusi(>n that 

 Pasteur's microhian theory is the only one that explains all facts,"— Aee^ 1'oik 

 TimcS. 



EARTHQUAKE! AND OTHER EARTH MOVEMENTS. 



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

 College of Engineering, Tokio, Japan. With 38 Illustrations. 12mo. 

 Cloth, .$1.75. 



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

 is known concernins the nature and causes of earthquake mcvercents. His task 

 wag one of much difficu.ty. Professor Milne's excellent work in the science of 

 seismology has been done in Japan, in a region of incessant shocks of suflficient 

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

 effects. He has haa the good fortune to be aided by Mr, Thomas Gray, a gentle- 

 man of great con?tructive skill, as well as by Professors J. A. Ewing, W. S. Chap- 

 lin, and his other colleairnes in the scientific colony which has fathered ahoit the 

 Imperial University of J;)pan. To these lentlemen we owe the best of our sci- 

 ence of seismology, for b-fore their achievements we had nothing of value oon- 

 ceniing the physical conditions of earthquakes except the croat works o' Kcbeit 

 Mallet; an i Mallet, with all his renins and devotion to the subject, I ad b' t lew 

 chanci^s to observe the actual shocks, and so failed to understai:d many of their 

 important features."— :/'Ae Nation. 



New York : D. APPLETON & CO., 1, 3, & 6 Bond Street. 



