(a) Diagnoses Fungorum novorum in Insula Socotra a Bayley 
Balfour, Carolo Cockburn et Alexandro Scott, lectorum, 
quas elaboravit Dr. M. C. Cooke. Communicated by Dr. 
Bayley Balfour, . . . . . .450 
(b) Diagnoses Algarum novarum Socotrensium a Bayley Balfour, 
Carolo Cockburn et Alexandro Scott, lectorum, quas 
elaboravit Dr. G. Dickie, F.R.S., . . . 45( ! 
(c) Diagnoses Licbenum Socotrensium novorum a participibus 
expeditionum Prof. Bayley Balfour et Dr. Schweinfurth, 
lectorum, quas elaboravit Dr. J. Muller. Communicated 
by Dr. Bayley Balfour, . . . . .45' 
Monday , Qth February 1882. 
On the Colour of the Mediterranean and other Waters. By Mr. 
John Aitken, ...... 472 j 
The Surface Geology of Mid-Lochaber. By Professor Duns, D.D., 483 
Remarks on Dielectric Strength. By Professor Chrystal, . 487 
Diagnoses Plantarum novarum et imperfecte descriptarum Phane- 
rogamarum Socotrensium ; quas elaboravit Bayley Balfour, 
Scientiae Doctor et in Universitate Glascuensi rerum botani- 
carum regius professor. Pars Prima, . . . 498 
Monday , 20 th February 1882. 
On a Specimen of Balcenoptera borealis or laiiceps captured in the 
Firth of Forth. By Professor Turner, . . .515 
On Minding’s Theorem, By M. G. Plarr. Communicated by 
Professor Tait, . . . . . , 528 
Chapters on the Mineralogy of Scotland. Chapter VII. By Dr. 
Heddle, . . . . ' . . 549^ 
On the Dimensions of Cast Iron at various Temperatures, with 
more especial reference to the Phenomena of the Solid float- 
ing on the Molten Metal. By W. J. Millar, C.E., Secre- 
tary Inst. Engineers and Shipbuilders in Scotland, . . 549 
On an Oxycyanide, and a New Oxide of Bismuth. By M. M. I 
Pattison Muir, M.A., Fellow, and Praelector in Chemistry, 
of Gonville and Caius College, Cambridge, . . .557 
Mathematical Note. By Mr. T. B. Sprague, . . .56 i 
On the Manner in which Silicon, Phosphorus, Manganese, and 
other elements exert their influence upon Steel. By R. 
Sydney Marsden, D.Sc., F.R.S.E., F.C.S., &c., . . ,56f 
Monday , §th March 1882. 
The Effect of Flame on the Electric Discharge. By Dr. A. 
Macfarlane and Mr. D. Rintoul. (Plate IV. a ), . 
Observations on Vegetable and Animal Cells; their Structure, 
Division, and History. Part I., The Vegetable Cell. By 
J. M. Macfarlane, B.Sc. Communicated by Professor A. 
Dickson, 
On some Points in the Anatomy of the Nervous System of the 
Pond Snails, Planorbis and Lymnseus. By F. E. Beddard, 
B.A., New College, Oxon. Communicated by Mr. P. Geddes, 
A Critical Examination of two Cases of unusual Atmospheric 
Refraction described by Professor Vince. By Mr. Edward 
Sang, . . . . . . 
For continuation of Contents, see pp. 3 and 4 of Cover , 
If 75 
