Pennsylvania for Sessions 1901-1903. xvii 
noteworthy were a collection of several hundred from Dr. 
Rosenstock, including many examples of wild hybrids, varie- 
ties and rare European species, also a collection of Cali- 
fornian species sent by Mr. De Cou, now resident there. 
January 2, 1903. Dr. Miller, President, in the chair. 
Dr. C. H. Shaw spoke on “A Proposed Lesson in Botany, 
Twenty Interesting Plants and How to Know Them.” He 
said that in botanical study we too often deal in generalities 
without cultivating an intimate acquaintance with the dif- 
ferent growing stages of the living plant. By aid of lantern 
slides, he then made the audience familiar with the homes 
and haunts of Dicentra, Hepatica, Sanguinaria, Cypripe- 
dium, Epigea, Decodon, etc., and referred to suggestive 
growth relations in each. 
Mr. O. P. Phillips then gave “Plant Life in Relation to 
the Painted Desert and Grand Canyon,” illustrating with 
a set of beautiful lantern slides, many of them colored. In 
Western America we have large areas of desert land which 
exhibit all stages of aridity from the heated sandy regions 
over 300 feet below sea level on the Colorado and Yuma 
deserts through the conditions shown by the great Sahara of 
Africa, to the arid plateau region of Arizona and New 
Mexico, known as the Painted Desert, from 6,000 to 8,000 
feet above sea level. Over these areas the green woods 
and sage bushes form the prevalent type of vegetation, 
bunch grass is occasional. Poplars and willows are the 
common trees along the railways, while junipers and nut 
pines are scattered over the higher areas. 
Miss Marion Mackenzie then intimated that phytopheno- 
logical charts would be distributed to all who desired to 
make records during the year. 
Dr. Miller showed and commented on some catalogues of 
spices and essential oils sent out periodically by Schimmel 
& Co. 
Dr. Macfarlane exhibited and shortly described specimens 
of Rubus australis, three species of seedling Acacia, and 
several specimens and hybrids of Cypripedium. 
