572 
Achullea millefolia, a few Mammillarias, tops 
of Datura with stems and pods, dried gourds, 
bunches of unkown herbs wrapped in corn 
husk, bunches of the pepper tree (Schinus) 
molle, bunches of dried roots, sea beans 
(Mucuna), hoofs of a deer, ears of a donkey 
dried, stuffed birds, carapace of a turtle, 
dried aHigator with skin removed, armadillo 
skins and other remedies too nnmerous to 
mention. J returned again and again to 
this market and always found it a source of 
information and amusement. 
Mexico is a very rich and virgin field for 
ecological study and is yet an unworked 
field. Similar observations in other regions 
have been made by Dr. Eugene Warming, 
of the University of Copenhagen, several 
years ago in Venezuela; at Lagoa Santa, 
by Dr. Scott, who explored the Cape region 
of South Africa, in the Kalahari desert ; by 
Professor Stahl in Java,and last year in 
Mexico; and by Professor Trelease, of the 
Missori Botanical Garden, on the Yuccas 
of the southwestern United States and 
northern Mexico. 
JoHn W. HARSHBERGER. 
UNIVERSITY OF PENNSYLVANIA, 
BOTANY AT THE AMERICAN ASSOCIATION 
FOR THE ADVANCEMENT OF SCIENCE. 
Srcrion G organized on Monday, August 
9th, at 12 m., with about 18 persons in at- 
tendance, the Vice-President and Secretary 
both being in their places. After the elec- 
tion of 3 fellows to serve on the Sectional 
Committee further elections were post- 
poned till the following morning, when the 
full organization was completed. The at- 
tendance on the meetings ran up each day 
to about 50, except during the Vice-Presi- 
dential address, when the room was 
crowded with about 150 people. The list 
of new officers elected for the Section is 
found elsewhere in this JourNAL, and need 
not be repeated here. 
Two invitations given to the Section were 
SCIENOE. 
[N. S. Vou. VI. No. 146. 
quite generally accepted by its members; 
the one being to a visit of inspection to the 
immense pharmaceutical laboratory of 
Parke, Davis & Co., in Detroit; the other 
being to a trolley ride and entertainment 
by Mr. Joseph Berry, of Grosse Pointe, 
where the fine grounds, extensive gardens 
and conservatories were greatly enjoyed. 
During its session the Section was hon- 
ored with a brief visit from Professor H. 
Marshall Ward, of Cambridge University, 
England. 
The papers read numbered a total of 26. 
Several of the older botanists usually in at- 
tendance at the meetings of the Associa- 
tion were absent, and there was, therefore, 
a predominance of younger members; the 
quality of papers was, however, good, the 
most of them being narrative of original re- 
search on the part of their authors. 
The preliminary program has already 
been published in SciENcE (pp. 222-223 
above), and the following papers were sub- 
sequently entered : 
“On a New and Improved Self-Registering Bal- 
ance,’ by Dr. Alex. P. Anderson. 
‘The Correlation of Growth under the Influence of 
Injuries,’ by Dr. C. O. Townsend. 
“The Botanical Collection of the Cornell Arctic 
Expedition of 1896,’ by Professor W. W. Rowlee and 
K. M. Wiegand. [Read by title. ] 
‘Description of Bacillus Phaseoli n. sp., with some 
Remarks on Related Species,’ by Dr. Erwin F. Smith. 
“On the Nature of Certain Pigments produced by 
Fungi and Bacteria, with special reference to that pro- 
duced by Bacillus solanacearum,’ by Dr. Erwin F. 
Smith. 
Since the address of the Vice-President 
on‘ Experimental Morphology’ has been 
published in full in this JourNAL, comment 
need not be given here, except to say that 
the address, illustrated by lantern-slides was 
a collaboration of results of many botanists 
in experimental morphology, and was full 
of suggestion for future research in this di- 
rection. 
Professor Davis’ paper on the variation of 
