Ill 
Monday , 1th March 1872. 
PAGE 
On the Connection between Chemical Constitution and 
Physiological Action— Continued. On the Physiologi¬ 
cal Action of the Salts of Trimethylsulphin. By 
Professor Crum Brown and Dr Thomas R. Fraser, . 663 
On the Mean Monthly Rainfall of Scotland. B}^ Alexander 
Buchan, ...... 665 
Note on the Strain-Function. By Professor Tait, . 667 
On the Motion of Rigid Solids in a Liquid circulating Irro- 
tationally through Perforations in them or in any 
Fixed Solid. By Sir William Thomson, . . 668 
Monday , 18 th March 1872. 
On the Extraction of the Square Root of a Matrix of the 
Third Order, By Professor Cayley, . . . 675 
Second Note on the Strain Function. By Professor Tait, . 682 
Note on the Rate of Cooling at High Temperatures. By 
Professor Tait, ..... 682 
Notice of a Large Boulder in the Parish of Rattray, and 
County of Perth, having on one of its sides Cups and 
Grooves, apparently artificial. By D. Milne Home, . 682 
On the Fruiting of the Ipecacuan Plant (Cephaelis Ipecacu¬ 
anha ,, Rich.) in the Royal Botanic Garden. By Prof. 
Balfour, ...... 688 
Monday , 1st April 1872. 
On Cardiocarpon. By Professor Duns, D.D., F.R.S.E., 
New College, ...... 692 
On the Composition of the Flesh of the Salmon in the 
“ Clean ” and “Foul” condition. By Sir Robert 
Ciiristison, Bart., ..... 694 
On Recent Estimates of Solar Temperature. By James 
Dewar, Esq., ...... 697 
On the Temperature of the Electric Spark. By James 
Dewar, Esq., ...... 699 
Monday , 15th April 1872. 
On the Action of Water on Lead. By Sir Robert Christi- 
son, Bart,, ...... 699 
On the Preservation of Iron Ships. By James Young, Esq., 
of Kellie, ...... 702 
First Report by the Committee on Boulders appointed by 
the Society, . . . . . .703 
