1*26 
Proceedings of Societies. 
[April, 
introduction of the corresponding corrections requisite in the Azimuth found, so 
as to avoid the necessity of going through the whole operation again. 
The differential formulae for changes in N. P. D. further enables the observer 
to compute a set of observations for many nights in succession, by merely finding 
the daily variations in the other parts consequent thereto. 
It has always been a desideratum to extend the observation of Azimuths to some 
time before or after the exact period of the maximum elongation, without resorting 
to the laborious formulae of Spherical Trigonometry to workout the results. The 
second part ot Captain E.’s paper provides a rigorous formulae, also differential, 
for this object ; and it points out how the process may be simplified in practice, 
without diminishing in an appreciable degree its practical accuracy. As an 
example of its application, he deduces that the polar star may be considered 
stationary in Azimuth for the space of four minutes and seven seconds; and that 
for half an hour prior and subsequent to the maximum elongation, the variation in 
Azimuth is only one minute of space in lat. 24°. 
Tables for all these minute corrections may be computed with facility from the 
formulae given. J 
6 Read also some observations made in a journey from Calcutta to Ghazee- 
poor, by the Reverend R. Everest 2 . 
2. — Medical and Physical Society. 
At the Meeting held on the 3d April, Messrs. Key, Geddes, Keir, and Jacob, 
were elected Members, and Mr. Hitchcock, of Leicester, a Corresponding Member 
of the Society. The following communications were then laid before the 
Society : An account of Lithotomy on Natives, with Calculi removed by opera- 
tion, by Mr. Burnard. A case ol disease of the hand requiring amputation, with 
a model and preparation, by Mr. Fuller. A case of tumor of the Orbit success- 
fully removed by operation, by Mr. Egerton. A case of Pancreatic Sarcoma of the 
1 * . J . *' ' vinj ng. A case ot osseous tumor of the lower jaw, successfully 
excised, with a drawing of the same, by Mr. Brett. Seven cases of Lithotomy on 
Natives, with specimens of the Calculi, by Mr. Brett, of Shajehanpore. A case 
of Lithotomy on an European, with analysis of Calculi reinoved from Natives 
} operation, y r. wining. Part 1st, of an Essay on the common fevers of 
’ ie y Hut . chlns , on - A letter from the Secretary of the Rio de Janeiro 
Medical Society, stating the formation of the same in 1829 —having for its object 
the improvement of Medical Science generally; and enclosing a copy of the Re- 
gu ations of the Society, and earnestly requesting the establishment of an amicable 
«rM.H m T tl0n i an c dC0 :°r rat V 0 . n with the Calcutta Medical and Physical Society, 
Mechca and Scientific subjects. A printed account of the Siamese Twins, 
sented” ht Dr K r ° D % Dr i J C- V os’s Thesis Be ruminatione humana; pre- 
sented by Dr. Keir. Several objects of Natural History from Pirmmr were 
^ ° aSe ° f Abscess of the Liver ’ formerly laid before 
by fhe meeting Hltchcock s account of Cholera, were then read and discussed 
14 A lasTwdh T . tHat f an E *ro P ean admitted into Hospital on the 
case^o^dtirfnU? fpidS Sti? " ,““T °/ 
ship’s company had been reduced by illness during 
port The weather was squally and wet as s usLl n tt s w° ^ ^ d 
the ship’s destination hpinrr i S usual m the s - W. monsoon, and 
along the Malabar Pn»ct 7 n 1 ' 1 ’ ker course was continued in a direction 
“f - “■* 
TI.. S paper wdl appear .a our treat , the abstract of it in, therefore, omitted. 
