naturalists’ quarterly advertiser. 
xiii 
20. HYATT, A. —Observations on Fresh-water Poly- 
zoa. pp. 103, 9 plates, and 25 cuts, 8vo, 1868 . . . 2 50 
21. DANA—Corals and Coral Islands . . . . 4 00 
22. LANKESTER.—Half Honrs with the Microscope. 
By E. M. D. Lankester. 16mo, cloth, 
gilt. Colored plates . . . . 2 00 
23. “ On Food ; being Lectures delivered 
at the South Kensington Museum. By E. L. Lankester, 
M. D., F. R. S. Second edition, 12mo, cloth. London, 1873. 2 00 
24. SOMERVILLE. —On Molecular and Microscopic 
Science. By Mary Somerville. 2 vols., crown 8vo, cloth. 
London, 1869 .. 8 00 
25. BEALE.—The Microscope in Medicine. 4th edition. 
pp. 550. Nearly 600 engravings.7 50 
26. COOKE, M. C.—1000 Object for the Microscope. 50 
27. “ Microscopic Fungi, an Introduction 
to the Study of Rust, Smut, Mildew and Mould. Illustrated 
by nearly 300 figures, colored.2 00 
28. EDWARDS, JOHNSON and SMITH. — Practical 
directions for Collecting, Preserving, Transporting, Pre¬ 
paring and Mounting Diatoms; consisting of Three sepa¬ 
rate Papers, by A. L. Mead Edwards, Christopher John¬ 
son and Hamilton Smith. 12 mo, cloth .... 85 
29. FREY HEIMRICH.— The Microscope and Micro¬ 
scopic Technology. A Text-book for Physicians and Stu¬ 
dents. Translated from the German, and edited by George 
R. Cutter, M. D., Chemical Assistant to the New York Eye 
and Ear Infirmary. Illustrated by 343 engravings on wood. 
From the fourth edition. In one handsome 8vo volume. 
Bound in extra cloth . ^ ...... 6 00 
I 
