11 
Monday , Qth February 1871. 
PAGE 
Note on two Species of Foraminifera, and on some Objects 
from the Nicobar Islands of great Ethnological interest. 
By T. C. Archer, Esq., . . . 353 
Certain Phenomena applied in Solution of Difficulties con¬ 
nected with the Theory of Vision. By R. S. Wyld, 
Esq., ....... 355 
Additional Note on the Motion of a Heavy Body along the 
Circumference of a Circle. By E. Sang, Esq., . 361 
On the Capture of a Sperm Whale on the Coast of Argyle- 
shire, with a Notice of other Specimens caught on the 
Coast of Scotland. By Professor Turner, . .365 
On the Efficient Powers of Parturition. By Dr J. Matthews 
Duncan, ...... 370 
Monday , 20 th February 1871. 
On the Pentatonic and other Scales employed in Scottish 
Music. By the Hon. Lord Neaves, . . . 382 
On the Motion of Free Solids through a Liquid. By Sir 
William Thomson, . . . . .384 
Laboratory Notes. By Professor Tait — 
1. On Thermo-electricity, .... 390 
2. On Phyllotaxis, ..... 391 
Monday , Qth March 1871. 
Account of the Extension of the Seven-Place Logarithmic 
Tables, from 100,000 to 200,000. By Edward Sang, 
Esq., ....... 395 
On the Place and Power o£ Accent in Language. By Pro¬ 
fessor Blackie, ..... 395 
Monday , 20 th March 1871. 
Notice of Exhibition of Vegetable Spirals. B} r Professor 
Alexander Dickson, . . . . .397 
On the Old River Terraces of the Spey, viewed in connection 
with certain proofs of the Antiquity of Man. By the 
Rev. Thomas Brown, F.R.S.E., . . . 399 
For continuation of Contents, see pp. 3 and 4 of Cover. 
