vi CONTENTS [VOLUME XXXVII 
PAGE 
New or unrecorded mosses of North America. II. 
(with plates XVI-XXV) J. Cardot and I. Thériot 363 
Contributions from the neCaae Laboratory of 
Harvard University. LVI. Notes on the 
anor ee. — XXVI_ and 
XXVIII) - Roland Thaxter 405 
Undescribed plants from Guatemala and other Cen- 
tral American Republics. XXVI. - John Donnell Smith 417 
Are plants of sea beaches and dunes true halophytes ? 
Thomas H. Kearney 424 
Some new species of western Polemoniacéae - - - Alice Eastwood 437 
Notes on the Monterey pine (with five figures)  - - George J. Pierce 448 
BRIEFER ARTICLES— 
Selected notes. III (with seventeen figures)  - W.C. Coker 60 
On the oo of the si rower — ; ; 
in the Hepati J.B. Farmer: 63 
Deforestation and creek flow wh Monroe, 
isconsin (with map) - F. A, Shriner and E. B. Copeland 139 
The effects of external ae on the a 
of root hairs - - Laetitia M. Snow 143 
Preservation of seeds buried inthe soil — - - J.W.T. Duvel 146 
Cumaphytism in Alaria (with two figures) - Conway MacMillan 147 
Craterellus es a new ee of Thele- 
phoraceae - Charles Thom 215 
Notes on southwestern and Mexican oe - J.M.Greenman 219 
The structure of the flowers and the mode of 
pollination of the primitive angiosperms ~ Charles Robertson 294 
Arcterica, the rarest genus of heathers AN two 
figures) - : Frederick V. Coville 298 
New ee for use in pet 
physiology (with three figures) _ - - W.F. Ganong 302 
Physical properties of bog water. Contribu- 
tions from the Hull Botanical ee 
LVII. B. E. Livingston 383 
William M. Gayl (with portrait) - - - J.N. Rose 385 
Anatomy of cotyledons - - - - Francis Ramaley 388 
The celloidin method with hard tissues - - Amon B. Plowman 456 
