D. APPLETON & CO.'S PUBLICATIONS. 
MODERN SCIENCE SERIES. 
Edited by Sir JOHN LUBBOCK, Bart., F. R S. 
The works to be comprised in the "Modern Science Series" are primarily not for 
the student, nor for the young, but for the educated layman who needs to know the 
present state and result of scientific investigation, and who has neither time nor inclina- 
tion to become a specialist on the subject which arouses his interest. Each book will 
be complete in itself, and, while thoroughly scientific in treatment, its subject will as 
far as possible be presented in language divested of needless technicalities. Illustra- 
tions will be given wherever needed by the text. The following are the volumes thus 
far issued. Others are in preparation. 
CA USE OF AN ICE AGE. By Sir ROBERT 
BALL, LL. D., F. R. S., Royal Astronomer of Ireland, author of 
"Starland." I2mo. Cloth, $1.00. 
" Sir Robert Ball's book is, as a matter of course, admirably written. Though but a 
small one, it is a most important contribution to geology." London Saturday Review. 
" A fascinating subject, cleverly related and almost colloquially discussed." Phila- 
delpliia Public Ledger. 
7 
HORSE: A Study in Natural History. By 
WILLIAM H. FLO\VER, C. B., Director in the British Natural 
History Museum. With 27 Illustrations. I2mo. Cloth, $1.00. 
" The author admits that there are 3,800 separate treatises on the horse already pub- 
lished, but he thinks that he can add something to the amount of useful information 
now before the public, and that something not heretofore written will be found in this 
book. The volume gives a large amount of information, both scientific and practical, 
on the noble animal of which it treats." New York Commercial Advertiser. 
T 
OAK: A Study in Botany. By H. MARSHALL 
WARD, F. R. S. With 53 Illustrations. I2mo. Cloth, $1.00. 
" A.n excellent volume for young persons with a taste for scientific studies, because 
it will lead them from the contemplation of superficial appearances and those generalities 
which are so misleading to the immature mind, to a consideration of the methods of 
systematic investigation." Boston Beacon. 
" From the acorn to the timber which has figured so gloriously in English ships 
and houses, the tree is fully described, and all its living and preserved beauties and 
virtues, in nature and in construction, are recounted and pictured." Brooklyn Eagle. 
E 
TH NO LOGY IN FOLKLORE. By GEORGE 
LAWRENCE GOMME, F. S. A., President of the Folklore Society, 
etc. I2mo. Cloth, $1.00. 
This book is an attempt to ascertain and set forth the principles upon 
which folklore may be classified, in order to arrive at some of the results 
which should follow its study, giving the subject the importance it deserves 
in connection with researches in ethnology. 
New York: D. APPLETON & CO., I, 3, & 5 Bond Street. 
