naturalists’ quarterly advertiser. xxix 
18. HEMSLEY.—Hardy Trees, Shrubs and Plants . 7 50 
19. GRAY.—Synoptical Flora of N. A. Part 1 6 00 
20. NAVE, J.—Collectors’ Handy-Book of Algae and 
Seaweeds. London ..1 25 
21. —HEATH. — The Fern World. By Francis George 
Heath. 8 vo. Illustrated. Many colored plates . . 5 00 
22. SMITH, John.—Historia Filicum. By John Smith, 
A. L. S. On the Classification, Distribution and Structure 
of Ferns. 30 plates by W. H. Fitch. London, 1875. 8vo. 5 00 
23. HOOKER.—Exotic Flora. By Sir W. J. Hooker. 232 
elegant colored platq£. Large, 8vo. London . . 35 00 
24. WILLIAMSON.—Ferns of Kentucky. 1 vol. . . 2 00 
25. Ferns of North America. Text by Prof. D. C. Eaton, 
of Yale College. Profusely illustrated by superb litho¬ 
graphic plates, by Emerton and Faxon. 27 parts now ready. 
Price per part.. 
1 00 
26. 
FARLOW.—An Asexual Growth from the Prothal- 
lus of Pteris Cretica ..... 
25 
27. 
<« 
List of the Marine Algae of the United 
States ........ 
30 
28. 
<« 
Three Papers on Fungi with Six Plates 
from the Bulletin of the Bussey Institute . 
75 
29. 
a 
On Some Algae New to the United 
States . . 
25 
30. 
a 
Remarks on some Algae found in the 
Water Supplies of the City of Boston 
15 
31. 
a 
List of Fungi found in the Vicinity of 
Boston. 
35 
32. 
a 
Notes on Some Common Diseases 
caused by Fungi ..... 
25 
33. 
«c 
States, 
List of Marine Algae of the United 
with notes of New and Imperfectly Known Species. 
25 
