80 : MISSOURI BOTANICAL GARDEN BULLETIN 
13. Puant Breepinc. The principles and practice of 
plant breeding. Hybridization and selection. The origin 
of horticultural varieties. April to October. (Lurie) 
14. PLant Mareriats. Flowering trees, shrubs, peren- 
nials, and annuals used in landscape designs and private gar- 
dens in this country. Intended to familiarize the student 
with the variety of flowering material at his disposal, together 
with the facilities of various nurseries and growers in Amer- 
ica. April to October. (Ohlweiler) 
15. Sorrs. A consideration of the soil as a medium for 
root development and as a reservoir for the storage and con- 
servation of water. Water movement, capillarity, aération, 
temperature, natural minerals, soil organisms, ete. October 
to April. : (Ohlweiler ) 
16. Ferrinizers. Function of manure and commercial 
fertilizers, including a_ special study of nitrates, nitrites, 
phosphates, superphosphates, ete. A résumé of the present 
status of the subject with special reference to horticultural 
uses. October to April. (Ohlweiler) 
17. Aquatic GarpENING. Culture and use of aquatic 
plants. April to October. (Pring) 
18. Pure Design. Theory and practice; its application 
to all arts, especially landscape gardening. October to Janu- 
ary. (Noyes) 
19. Prrncrptes or LANDSCAPE GARDENING. Lectures on 
history and theory. Practice in drafting, rendering in ink 
and water colors; office methods. Analysis of landscape de- 
signs. January to July. (Noyes) 
20. Lanpscare Design. Practice in design of home 
grounds, private estates, parks, playgrounds, cemeteries, sub- 
divisions, etc. July and September. (Noyes) 
Third Year 
21. ParHotoey. Laboratory work with lectures on the 
common diseases of greenhouse and other cultivated plants 
and trees. October to April. (Burt) 
22. Systematic Botany. Gross anatomy of plants, the 
study of the relationships between the various groups and 
individuals to be found cultivated and wild; designed pri- 
marily to train the student in the ready identification of 
plants. The period from J anuary to March is devoted to the 
