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the help of Mr. Emil Barens, W.P.A. assistant. Through the 

 courtesy of Dr. W. J. Robbins, Director, and Mr. Thomas FT. 

 Everett, Horticulturist, of the New York Botanical Garden, we 

 obtained specimens of the flower-clusters of nearly all their varie- 

 ties. Visiting Highland Park, Rochester, I obtained from Mr. 

 R. E. Horsey a list of their extensive lilac collections. We have 

 about twenty species and two hundred varieties of lilacs now grow- 

 ing in the Garden. 



Herbaceous Plants 



Further study was given to various groups of herbaceous plants 

 with a view to deciding what additional plants we ought to have in 

 our collections. Keys for the species that we now have were ap- 

 proximately completed for the herbaceous plants on the east side 

 of the brook, that is for the families Aristolochiaceae to Umhel- 

 liferae. The past year new maps, conforming to our other small 

 size maps, were made by Mrs. Putz of the varieties of herbaceous 

 horticultural plantings, including water-lilies, peonies, asters, chrys- 

 anthemums, tulips,, narcissuses and cannas. 



Classes 



Beginning March 13th I gave three lectures, with an average 

 attendance of about fifty, on " The Role of Plants in Animal Evolu- 

 tion " : (1) The Lower Plants and Animals; (2) The Transition 

 from Lower to Higher Organisms; (3) Flowering Plants and 

 Mammals. From April to June I gave ten outdoor lessons on 

 Herbaceous Plants, continued by live lessons in the fall. In May 

 I save four lessons on " Lilacs in Flower," followed bv one lesson 

 by Mr. Free on lilac cultivation and propagation. Twelve varieties 

 were selected by each member of the class ; from these, cuttings 

 were rooted and are being kept this winter by the Garden; in the 

 spring they will he given to the members of the class. In the fall 

 I gave eight outdoor lessons on conifers, followed by two lessons 

 by Mr. Doney on broad-leaved evergreens and the cultivation of 

 evergreens. Mr. Doney gave ten lessons in the spring and eight in 



