306 Screntifie Intelligence. 
than a — ed came by other routes. They were made honorary 
members of the American Association, and many of them took an 
active _ in the work of the sections. Amon ng the poate: thus 
ears may be mentioned those by Professor Sir Wm. Thom- 
“On the distribution of potential in conductors aoe 
she electromagnetic effects aiecwenad by Hall;” by Professor — 
me on ‘ i ili 
ites of ue retraction my on ae method. of ae 
the motion of the moon’s apogee ;” by Professor A. Vernon Har- 
court “On the minute study of aes mical main » and “On a 
lamp for producing a constant flame ;” by Sir Frederick ne 
‘on ‘‘Heating from a central source ; ;” by Rev. S. J. Perry, on 
“Late researches on the solar surface with special cious to 
evanescent spots ;” by Professor Robert S. Ball, exhibiting and 
describing a model of the “ ruled cubic surface known as the cylin- 
droid ;” by Professor H. N. Moseley “On the presence of eyes 
and other sense organs on the shells of Chitonide,”’ e ‘Utricularia 
vulgaris with young teleostean fishes entrapped in the pore 
trap of Sere plant” and “ On the feathers of the Dodo;” by Dr. 
E. B. Tylor “Remarks on North American races and civiliza- 
tion ;” ay Professor J. G. McKendrick “On ethidene dichloride 
as an anmsthetic.” Papers were read also by — Bedford Pim, 
J. Biddulph Martin, Professors W. F. Barrett, S$. P. Thompson, 
= oe Valentine Ball and A. H. Allen, and Mr. Trelawney 
aunder 
The eta ns of subjects for discussion by the sections con- 
stituted a new and valuable feature of the meeting. rough 
tration of chemical lectures,” opened by Professor Remsen. e 
tion D discussed on Monda , “The use and value of accurate 
standards, screws, surfaces, gauges, ete. ; > and on Wednesday, 
‘“* The applications of electricit 
Lectures were delivered at the Academy “ emg on oer 
evening by Professor J. §. Newberry of New York on “The 
geological evolution of _ North American veccaitioatil > and on 
Tuesday evening by Professor Robert Stawell Ball, Astronomer 
Rotel for Ireland, on “ Haunt researches on the distances of the 
stars.” Both lectures were illustrated with the lantern. 
The social festivities of the meeting were given on a magnificent 
seale. On Friday evening, before Professor Young’s address, 
American Association was welcomed by President Welsh of the 
Local Committee, and the British Association by Provost Pepp®™ 
