60 
J. E. Fincu, B.A., Trinity Hall. 
J. F. WaLKer, B.A., Sidney Sussex College. 
B. W. Earte, B.A., Jesus College. 
W. K. Cuirrorn, B.A., Trinity College. 
On the difference of Longitude between the Society's 
Clock and the transit Clock of the Cambridge 
Observatory. By Prorussor Cuauus, F.R.S. 
THE author described the instrument used and the means 
adopted in determining the difference, and stated that it was 
5°88”, and that the longitude of the Society’s clock was 28°52” 
east from Greenwich. 
On the Meteoric shower of November, 1866. By 
Proressorn Apams, F.R.S. 
THE author described the instrument used in the observation 
of the Meteors, and mentioned the various hypotheses which 
have been advanced concerning the orbit of these bodies; he 
explained the calculations which he had made to determine this, 
and shewed that the attractions of the Earth, J upiter, Saturn 
and Uranus were nearly sufficient to account for a hitherto 
unexplained change of about 29 minutes in the position of the 
nodes of the orbit in each period of 33 years. He called at- 
tention to the fact that the orbit calculated appeared to coin- 
cide very nearly with those of certain comets; and held that 
the latter were elongated ellipses with a periodic time of 
33 years. 
PROFESSOR CHALLIS and ProressoR MILLER made some 
remarks on this communication, in which the former expressed 
himself not quite convinced by the arguments of PROFESSOR 
ADAMS. 
Erratum. 
To title of Second Paper on page 40, add ‘by F. Paugy, M.A., St John’s 
College.’ 
