of Edinburgh, Session 1874-75. 421 
Brought forward, 352 
Deduct Deceased — Professor Thomas Anderson ; 
George Berry, Esq. ; Adam Black, Esq. ; 
Sheriff Cleghorn; The Bight Hon. Lord 
Golonsay ; Francis Deas, Esq. ; Henry 
Dircks, Esq.; William Euing, Esq.; Dr Bobert 
Grant; Professor John Hunter; Professor 
Cosmo Innes; Charles Lawson, sen., Esq.; 
and Henry Stephens, Esq., . . . .13 
Resigned — Dr W. M. Buchanan, Dr Alex. Wood, . 2 
Cancelled — Alfred B. Catton, Bev. Dr Hodson, . 2 
17 
Total number of Ordinary Fellows at Nov. 1873, . 345 
Add Honorary and Non-Besident Fellows, . . 52 
Total to 1874, 397 
Monday, 21 st December 1874. 
Professor KELLAND, Vice-President, in the Chair. 
The following Communications were read : — 
1. Remarks on the Great Logarithmic and Trigonometrical 
Tables computed in the Bureau du Cadastre under the 
direction of M. Prony. By Edward Sang. 
The volume marked “ Logarithms 0,” now' placed on the Society’s 
table contains, to 28 places, the Logarithms of all numbers up to 
Ten Thousand. In preparing it, care was taken that each prime 
should be placed in connection with two distinct sets of other prime 
numbers, in order that all likelihood of mistake should he avoided. 
This amounts to the computation of each logarithm by two inde- 
pendent processes. Opposite each prime, reference is made to the 
page of the record of calculations ; and the accompanying volumes 
marked “Construction, I., II.,” contain minutes of each articulate 
