v ADVERTISEME haas 
The International Journal of 
Microscopy and Natural Science. 
EDITOR: 
ALFRED ALLEN, Bath, England. 
PTY a RS: 
HAM, D. S. ade i as Chicago Galvan tya. S, A. 
FREDERICK ‘GAERTNER. A. M., 3 fring Pittsburgh, Pa., U 
. STEVENSON BROWN, President, Monien! l Mic , Montreal, Canada 
ILANDRO- VICENTINI, ms D. , Chiet i, Italy. 
The following are a portion of the Contents for January, 
1893. 
Polarised Light, and its jy nova iy the oon (lilustrated.) G. H. Bryan, M. 
Reichert’s Hæmometer. Najis Gaertn =i 
The Microscope and Its Pe abe ag “ (Dlustrated. v ' The Edi 
` A Device to take the place of the Camera Lucida in Cra aa ee pilad, 
A em Sse by the Mediterranean. G. rg Bryan, M. A 
Soaking and Sections of Tissues in Wat W. ' Plaxton, M. D. erre 
Preparing Sections of Teeth for Histology and Shite riology. Prof. V. A 
The Bot-Fl oe 
itrckorickeat! Tec 
Half an hour at ite Weiss with the late Tuffen West, F. R. M. S., F. L. S., ete 
(Illustrated 4 Litho. p 
tg Notes i the Postal Micro. Soc. eag sin (Illustrated. ) 
Notes. Queri Cor rrespondence. Reviews, 
edit, United States and iets $2.75 the year, post free. 
Agent: M. A. BOOTH, F. R. M. S., 
LONGM TROW ASS: 
PLASTER CASTS OF THE FOLLOWING MAMMALI 
with dentition in good preservation, made under direction 
Professor E. D. Cope may be had by application to J 
Geisman, 2102 Pine St., Philadelphia. 
Phenacodus primacvus Cope, (Wyoming) $100.00. 
racotherium venticolum Cope, (Wyoming) $50.00. Protom 
micabilis Leidy, skull $7.00. Protohippus pachyops Cope, 
of adult and young, and P. fossulatus Cope, skull, $5.00 e 
Tetrabelodon shepardii Leidy, mandibular ramus and symp” 
with two molars, $20.00. Dibelodon tropicus Cope, do» $ 
Mastodon precursor Cope, last molar $5.00. The horses 
mastodons from the Cenozoic beds of Texas, are uncolored. 
