ADVERTISEMENTS. v 
The International Journal of 
Microscopy «nu Natural Science 
EDITOR :—ALFRED ALLEN, Bath, Eng. 
Associate -~A. LATHAM, D. D.S M. S. etc., Chicago University, U.S. A. 
aS TEVENSON BROWN à President, oa Micro Soc. ., Montreal, Canada. 
EDITORS: FILANDRO VICENTINI, M. D., Chieti, Italy. 
Contains articles by Specialists in every department of Microscopy, Botany, 
Geology, Zoology, and Natural Science, Reviews of New Books, etc. 
llustrated with Plates, Wood engravings, etc. 
Portion of the Contents for January, 1895. 
The Denizens of an Old Cherry Tree with Notes of its Surroundings. (2 Plates.) 
C. J. Watkins. 
The Development of the Germ Theory. = bamsa Browne, F. R. C. S. E. 
Technology of the Diatomaceæ. J. Tem 
Predaceous and Parasitic Enemies of poris Including a Study of Hyper-Parasites. (2 Plates. 
. Vine) 
From Dust to Dust: A Cycle of Life. (1 Plate.) J. Sydney Turner, M. R. C. Ta PLS sj 
Address to the Members of the Bath (Eng.) PETEN Society.. Rev. E. T. Stubbs. 
Recent Bacteriological Researches on the Sputa. a" and Biology of the Microbes 
e Mouth. (1 Large Colored Piate.) F. Vic 
Saierbacopical Technique 
Notes, Reviews, etc., etc. 
BAILEY & FAIRCHILD, 29 Park Row, N. Y. 
M. A. BOOTH, Longmeadow, Mass. 
Sue U. ma A. ne PANADA, $2.75. POST FREE. 
PLASTER CASTS OF THE FOLLOWING MAMMALIA 
with dentition in good preservation, made under direction of 
Professor E: D. Cope may be had by application to Jacob 
Geisman, 2102 Pine St., Philadelphia. 
Phenacodus primaevus Cope, (Wyoming) $100.00. Hy- 
yacotherium venticolum Cope, (Wyoming) $50.00. Protohippus 
micabilis Leidy, skull $7.00. Protohippus pachyops Cope, skulls 
of adult and young, and P. fossulatus Cope, skull, $5.00 each. 
Tetrabelodon shepardit Leidy, mandibular ramus and symphysis 
with two molars, $20.00. Dibelodon tropicus Cope, do., $15.00; 
Mastodon precursor Cope, last molar $5.00. The horses and 
‘aastodons from the Cenozoic beds of Texas, are uncolored 
