MICROSCOPIC BOTANY. 
A Manual of the Microscope in Vegetable Histology. 
By Dr. EDUARD STRASBURGER. 
From the German by Rev. A. B. HERVEY. 
8vo, pp. 382. 114 illustrations. Price, $2.50. 
15 per cent discount to teachers. 
THE GASSING ART CO., 
publishers, 
BOSTON, MASS. 
The Observer for 1894, 
ENLARGED AND IMPROVED IN MANY WAYS. 
Ubree Departments : 
1. The Outdoor World, 
H. H. BALLARD, E. F. BIGELOW, Editors. 
Asscciate Editors : JNO. H. SAGE, ORNITHOLOGY, Portland, Conn.; A. W 
PEARSON, ENTOMOLOGY, Norwich, Conn. ; C. A. SHEPARD, BOTANY, New 
Britain, Conn. ; C. A. HARGRAVE, CONCHOLOGY, Danville, Ind. ; F. P. GORHAM 
GEOLOGY, 103 Knight St., Providence, R. I. 
2. Agassiz Association, 
Edited by H H. BALLARD, 
Pittsfield, Mass., President of the Agassiz Association. 
3. Microscopy, 
Edited by M. A. BOOTH, Longmeadow, Mass. 
Address all Business Communications to 
E. F. BIGELOW, Managing Editor and Publisher, 
I ( M^'TTwVNID, CONN. 
