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The application of Darwinian principles to plants is illustrated 
in the following manner : 
Variaiton under domestication by races of Indian corn; races 
of daffodils. 
Variation in nature by races and closely-related species of 
serie thorn trees. 
truggle for existence by the water hyacinth, a plant which has 
been introduced into Florida, a new habitat, where it has multi- 
plied at such a rate as to choke the streams ; a demonstration of 
the struggle for existence of young plants grown from seeds 
planted in areas that overlap ; Seis of the conditions in 
forests, where low shrubbery is prevented from growing because 
of the lack of light in the shade of the large trees. 
Flybvidism by specimens of hybrid ferns, oaks, verbenas and 
Valerianodes, together with their parents. 
The fossil record by a series of specimens of fossil plants show- 
ing the succession of their appearance upon the earth. 
ee distribution by specimens of the larger fungi as 
amples of invariable circumboreal and circumtropical plants. 
Principles of classification by living specimens of cactus plants. 
Principles of homology by specimens illustrating the different 
forms of leaves of the ferns and their relatives. 
Rudimentary and vestigial organs by a prickly-pear cactus and 
a New Zealand bramble showing reduced leaves. 
Lnsect-eating plants and climbing plants by displaying two dif- 
ferent kinds of adaptations — one in respect to nutrition, and the 
other in respect to the development of structures to afford 
mechanical support. 
Fertilization in plants by charts demonstrating the peculiar 
nature of the process of fertilization, and the special mechanisms 
that these organisms have developed to bring about fertilization 
in various ways. € processes are adjusted intimately to the 
visits made by insects to flowers for nourishment. 
Meteorology for February. — The total precipitation recorded 
at the Garden for February was 4.56 inches. Maximum tem- 
peratures were recorded of 58.5° on the 6th, 58° between the 
8th and 15th (thermograph failed to record exact date), 56° o 
