XXXVI Proceedings of the Botanical Society. 
Professor O. P. Phillips communicated “Notes on the 
Botany of California, with Special Reference to the Mam- 
moth Trees.’”’ He graphically described the location of each 
of the mammoth trees groves, and spoke of some of the better 
known specimens in each. In comparing Seguoia gigantea 
with the allied species S. sempervirens he inclined to consider 
that the latter may have attained to a greater age than did the 
mammoth tree. 
Mrs. S. T. Rorer exhibited a collection of fungi, and the 
Director of the University garden a variety of plants from it. 
December 21.—Dr. Miller, President, in the chair. Dr. 
Macfarlane being absent in Florida, Miss E. O. Abbot, Corre- 
sponding Secretary, acted as Recording Secretary pro tem. 
Dr. Harshberger read a paper entitled ‘Observations on 
the Limits of Variation in Plants.” Selecting leaves and fruits 
of various plants, he pointed out within what limits these 
varied as to size and shape. 
Miss Harriet Boewig then presented “A Review of Some 
Recent Papers on Irritability,’ in which she compared the 
older views held by Sachs, Pfeffer and Czapek with those pro- 
pounded by Noll, Haberlandt, and Nemec on the geotropic 
sensitivity of roots The paper was discussed by Drs. Harsh- 
berger and Miller. 
Mr. H. S. Conard drew attention to a flowering specimen 
of Casuarina tenuissima, from the University garden, to fruits 
of C. eguisetifolia presented by Mrs. E. J. Bartol, and to a 
plant of Salvia involucrata, which he recommended for green- 
house cultivation. 
