636 _ Proceedings of Societies: [ October, 
Professor Riley also exhibited a specimen of Doryphora decemlineata, 
that was so completely covered with a mite parasite belonging to the Ga- 
maside, and apparently the Gamasus coleopteratorum L., that the point 
of a needle could not be placed on any part of the beetle’s body without 
touching one of the parasites. He estimated that there were over eight 
hundred of the mites, and they had killed their victim. Aside from the 
toad and other reptiles, the crow, rose-breasted grosbeak, and domestic 
fowls among birds, which prey on the potato pest, he had, in his reports, 
figured or described no less than twenty-three insect enemies that atta 
and kill it.. Only one of these is a true parasite, and the mite exhibited 
made the second, or just two dozen insect enemies in all. 
He mentioned the fact in this connection that the Doryphora had 
reached New Hampshire, and was doing great injury along the Atlantic 
coast. 
THE AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE 
held its twenty-fifth meeting at Buffalo, commencing August 23d and 
closing August 30th. In point of numbers, the variety and quality of 
papers read, and the harmony of its sessions, it was quite equal to any 
of its predecessors ; while the warm hospitality with which the associa- 
tion was greeted by the citizens of Buffalo added a social charm pecul- 
iarly its own. The success of the meeting was largely due to the un- 
tiring endeavors of the local committee, and especially of Mr. Grote and 
Captain Dorr, and it is to be hoped that the Society of Natural Sciences, 
the initiator of the movement which brought the association to Buffalo, 
and the leader in its entertainment, may reap the reward that is its due 
in the higher esteem in which it will be held at home — the esteem it 
already has among kindred associations in the country. 
The president, Prof. Wm. B. Rogers, guided the deliberations of the 
general session with marked grace and dignity, and, in his responses to 
the hospitalities proffered the association, his welcome to the foreign 
guests, and his parting words, showed that the wonderful felicity of dic- 
tion, not to say eloquence, for which he was noted has not been dimm 
by his long illness. This being “ Centennial year,” no less than sixteen 
foreign scientists of greater or less distinction were present, a number 
far exceeding that of any former meeting of the association ; most of 
them were chemists and physicists, but among those in whom the readers 
of the NATURALIST are more generally interested were Professor Hux- 
ley, of England, and Drs. Torell, Lindahl, and Nordström, of Sweden. 
Drs. Torell and Lindahl indeed read papers before the Natural History 
Section, the former on the sources of the ancient glaciers of North 
rica, the latter on the structure of the tongue in Picus vires. 
Professor Huxley also spoke in general session of his impressions of 
America, in response to his welcome by President Rogers, and in Sec- 
tion B briefly discussed one of Dr. Wilder’s papers on the brains of the 
lower vertebrates. A few papers were also read in the physical , 
