Pennsylvania for Session 1897-98. 533 
announced her desire to present a chart of the maples pre- 
pared by her. The chart was shown, and on motion it was 
agreed that a vote of thanks be tendered Miss Lewis for her 
gift, and that the secretary be requested to notify her of the 
same, together with an acknowledgment of the appreciation 
by the members of her devotion to the study of botany and 
her success in interesting others in the study. 
A letter was read by the secretary announcing that press- 
ure of duties would prevent him remaining as secretary and he 
asked to be relieved by January 1. It was moved, seconded 
and agreed to that the secretary be relieved as requested, and 
that the warmest thanks of the Society be accorded to Dr. 
Kraemer for his earnest and eminently successful labors in its 
behalf. 
On motion it was also carried that Dr. Macfarlane be made 
secretary pro tem. 
Miss Amelia Smith read a paper on “ The Structure and 
Parasitism of Aphyllon unifiorum,’ an abstract of which has 
since appeared. 
Mr. R. E. B. McKenney described “ The Structure and Re- 
lation of Crystal Cells in Sensitive Plants,’ an abstract of 
which has since appeared. 
Dr. Harshberger drew attention to specimens of Badhamia 
utricularis in streaming form on wood and on a slide under 
the microscope. He also exhibited, on behalf of Dr. M. P. 
Ravenel, some mice affected by the parasitic fungus Achorion 
Schoenlini the presence of which had caused a considerable 
mortality recently amongst mice in Pennsylvania, and even 
amongst chickens and cats. 
Mrs. Sarah T. Rorer exhibited and described several fungoid 
specimens. She specially compared the physiological action 
on the human subject of Amanita muscaria, and A. phalloides. 
