159 
The Amazon valley. In “ Naturalist’s Guide to the Ameri- 
cas’ (Published under auspices of Ecol. Soc. of Amer.), 
pp. 674-081. 1926. 
Color inheritance in four o’clocks. (By Francis P. Kiernan 
and Orland E. White.) Jour. Heredity 17: 383-386. 
1920. | 
The genetic analysis of peas (Pisum). (With Dorothy I. 
Neff.) Brooklyn Botanic Gard. Rec. 15: 60-64. 19206. 
Heredity and variation in plants. Three chapters, pp. 935- 
1000, in “ General Botany” by C. Stuart Gager, pub- 
lished by Blakiston. 1926. 
The genetic analysis of garden and field peas (Pisum). (With 
Dorothy I. Neff and Mary Ellen Peck.) Brooklyn Bot. 
Garden Rec. 16: 26-29. 1927. 
‘“ Hardiness,’ mutation, and the geographical distribution of 
plants. Brooklyn Botanic Garden Rec. 16: 30-32. 1927. 
_ Project 3. Descriptive Study of Variation in Nephrolepis 
Scope: 
1. Bud variation in the Boston Fern (Nephrolepis exaltata 
bostoniensis) and other types. 
2. Variation in the spore-fertile variety (Nephrolepis exaltata 
bostoniensis var. fertilis). These studies involve the maintenance 
of as large a collection of distinct varieties as possible in the ex- 
hibition and experimental houses devoted to these ferns, the ob- 
taining and experimental study of any new varieties introduced 
by florists, and the propagation of new varieties in the Garden 
collections. In this connection the possibilities are only limited by 
space and time available. 
Status: 
During the last thirteen years extensive studies along these 
lines have been carried out. Collections of bud sports have been 
accessioned to over three hundred numbers from French and 
nglish, as well as from American sources, and numerous trips 
have been made to florists’ establishments from Massachusetts to 
Ohio. About one hundred distinct varieties have been raised in 
the Botanic Garden greenhouses, mainly in the spore-fertile series. 
