32 
The boulder bridge. Jour. N. Y, Bot. Gard. 8: 
247-250. N 1907. 
Lucien Marcus Underwood. Columbia Univ. Quart. 
D 190 
& Rose e, J. N. Periskiopsis,a new genus of Cactaceae. 
Smithsonian Misc. Coll. 50: 331-333. 28 O 1907. 
Burlingham, G. S. Suggestions for the study of the Lactariae. 
Torreya 7: 118-123. I9 Je 1907 
Some Lactarii from Windham County, Vermont. Bull. 
Torrey Club 34: 85-95. 9 Ap 1907. 
A study of the influence of magnesium sulphate on the 
growth of seedlings. Jour. Am. Chem. Soc. 2g: 1095-1112. 
Jl 1907 
Cook, M. T. Notes on polyembryony. Torreya 7: 113-117. 
1-3. 19 Je 1907. 
The embryology of Sagittaria lancifoha L. Ohio Nat. 
7: 97-102. pl. 8. 12 1907 
——— The embryology of Rigtidophylish, Bull. Torrey Club 
34: 179-184. pl. ro. 11 Je 1907. 
——— The embryology of Rhizophora Mangle. Bull. Torrey 
Club 34: 271-277. pl. 22, 23. 26 Jl 1907. 
Eggleston, W. W. New North American Crataeg?. Torreya 
7: 35, 36. 28 F 1907. 
The flora of Pownal. Bull. Vt. Bot. Club 2: 21-24. 
map. Ap 1907 
——— Peter Kalm’s visit to Lake Champlain in July, 1749. 
Bull. Vt. Bot. Club 2 
— C.S. (Diel’s) Juvenile forms and flower maturity. Tor- 
reya'7: 9-14. 7F 1907. (Revie 
Annual report of the director a the laboratories. Bull, 
N. ¥. Bot. Gard. 5: 233-240. 5 Mr 
Radium in biological research. ees II. 25: 589, 
590. 12 Ap 1907 
——— An occurrence of glands in the ae of Zea Mays. 
Bull. Torrey Club 34: 125-137. 7 My 
——— Science and poetry —a protest. ee IT. 25: 908, 
go09. 7 Je 1907. 
