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Jussieus. 3. The idea of plant evolution in the nineteenth century 
and after. Fee, $1.00. Fridays, 4 p.m., March 4-18. 
Dr. Gundersen. 
C8. Plant Families—FEight outdoor lessons in the botanic 
garden, taking up the structure of flowers and the characteristics 
of the more important plant families. Class limited to 25. Fee, 
$4.00. Fridays, 4-5: 15 p.m., April 29 to June 17. 
Dr. Gundersen. 
Cir. Spring Flowers and Ferns of the New York Region.— 
This is a field course of eight exercises given in the parks and 
woodlands of Greater New York. The common native and 
naturalized wild flowers are visited as they come into flower, and 
their characteristics and distinguishing features studied. Class 
limited to 30, taken in the order of application. Fee, $4.00. Sat- 
urday afternoons; April 23 to June 18 (omitting May 28). 
Dr. Gundersen. 
Cg. Trees and Shrubs of Greater New York.—Ten outdoor 
lessons at the Garden and elsewhere in Greater New York, the 
principal object being to gain a ready acquaintance with the com- 
mon trees and shrubs of the eastern United States, which are well 
represented in this region. The species are considered in sys- 
tematic order, and the features pointed out by which they may be 
most easily recognized; also their habits, rate of growth, economic 
value and use, methods of planting and propagation ; importance in 
forestry, horticulture, and landscape art. Limited to 50 members 
enrolled in the order of application. Fee, $5.00. Saturdays, 2: 30 
p.m., April 9 to June 18 (omitting May 28). Dr. Graves. 
D. Consultation and Independent Investigation 
1. Consultation 
Consultation and advice, and the facilities of the laboratories, 
library, and herbarium are freely at the service of members of the 
Botanic Garden and others with special problems relating to plants 
or ee products, especially in the following subjects: 
. Plant diseases (phytopathology) and classification of 
fee (mycology). Dr. Reed. 
_ Plant breeding and allied subjects (genetics and experi- 
eae evolution). Dr. White. 
