Linnaan Society. — Astronomical Society. 459 



on the outer edge, and all the other bones of the paddle are very 

 nearly circular or oval ; thus differing essentially from the angular 

 shaped phalanges of I. communis, tenuirostris, and intermedius. 



On account of the large size of its paddle, the author names this 

 species '* Ichthyosaurus grandipes." 



LINNiEAN SOCIETY. 



At the meeting on the 4th of May, A. B.Lambert, Esq. V.P. in 

 the chair, there was read " An Examination of M. Virey's Observa- 

 tions on Aeronautic Spiders," published in the Bulletin des Sciences 

 Naturelles. 



May 24. — This day, being the x\nniversary, the following Officers 

 and Council were elected for the ensuing year. 



President: Edward Lord Stanley, M.P. — Vice-Presidents : A. B. 

 Lambert, Esq. F.R.S.; W. G. Maton, M.D.F.R.S.; E. Forster, Esq. 

 F.R.S , and R. Brown, Esq. F.R.S. — Treasurer: Edward Forster, 



Esq. F.R.S Secretary: J. E. Bicheno, Esq. F.R.S. Assistant 



Secretari/: Richard Taylor, Esq. F.S.A. — Also to fill the five va- 

 cancies in the Council : George Bentham, Esq. ; John, Earl Brown- 

 low, F.R.S. ; Rev. W. Buckland, D.D. F.R.S. ; Charles Stokes, Esq. 

 F.R.S. ; Wm. Yarrell, Esq. Many of the members afterwards dined 

 together at the Freemasons Tavern, Lord Stanley in the chair. 



ASTRONOMICAL SOCIETY. 

 March 12, 1830. — The following communications were read : — 



1. Extract from a letter of Professor Harding to Dr. Tiarks, dated 



Gottingen, December 19, 1829. 

 " I observed the occultation of Aldebaran on the 9th of December, 

 and the sky being perfectly clear, I obtained the moments of immersion 

 and emersion with extreme precision. The first creeping out of the 

 star at the emersion was easily perceived, by the contrast of its red 

 light with the white light of the moon's limbj and I think that the 

 observation of the emersion is as accurate as that of tlie immersion. 

 I devoted all my attention to the observation, with a view to the well- 

 known phaenomenon of tiie star's remaining visible some seconds on 

 the moon's disc, which has been repeatedly observed in this star, and 

 which I have myself seen several times. I remained, at the immer- 

 sion, as well as at the emersion, 10 seconds before the telescope 

 without turning my eye off, but nothing of the kind was seen." 

 Occultation of a. Tauri, Gottingen, Dec. 9, 1829. 



Immersion 23" 37"'33'-3 1 gij^^^.^, ^-^^ 



Emersion 37 58 -3 J 



2. " On Mr. Pond's recent catalogue of 720 principal stars." By 

 Francis Baily, Esq. 



3. " On the metliod of computing the longitude from an observed 

 occultation of a fixed star by the moon." By Edward Riddle, E.sq. 



3 N 2 LXVI. In- 



