414 
Proceedings of Royal Society of Edinburgh. [sess. 
Friday , 2 8th February 1890. 
Sir Douglas Maclagan, M.D., Vice-President, in the Chair. 
The following Communications were read : — 
1. Structure and Contraction of Striped Muscular Fibre of Crab and 
Lobster. By Prof. Rutherford. P. xvii. 146 (Abstract). 
2. The Histology, Functions, and Development of the Carapace of the 
Chelonia. By John Berry Haycraft, M.D., D.Sc. 
3. Muscular Contraction following rapid Electrical Stimulation of 
Central Nervous System. By John Berry Haycraft, M.D., D.Sc. P. 
xvii. 178 (Abstract). 
Monday , 3 rd March 1890. 
Sir William Thomson, F.R.S., President, in the Chair. 
The following Communications were read : — 
1. Note on Ripples in a Viscous Liquid. By Prof. Tait. P. xvii. 110. 
2. A Geometrical Method, based on the Principle of Translation. By 
D. Maver, Esq. Communicated by Dr. T. Muir. P. xvii. 188. 
3. Phases of the Living Greek Language. By Emeritus Prof. Blackie. 
T. xxxvi. 45. 
Dr John C. M‘Vail was balloted for, and declared to be duly elected a 
Fellow of the Society. 
Monday , 17 th March 1890. 
Sir William Thomson, F.R.S., President, in the Chair. 
The following Communications were read : — 
1. An accidental Illustration of the Effective Ohmic Resistance to a 
Transient Electric Current through an Iron Bar. By Sir Wm. Thomson. 
P. xvii. 157. 
2. The Absorption Spectra of Certain Vegetable Colouring Matters. 
By Prof. C. Michie Smith. P. xvii. 121. 
3. On the Solution of the Three-Term Numerical Equationof the ?ith 
Degree. By the Hon. Lord M‘Laren. P. xvii. 270 . 
4. The determination of Surface-Tension by the Measurement of 
Ripples. By Prof. C. Michie Smith. P. xvii. 115. 
5. On a Mechanism for the Constitution of Ether : illustrated by a 
model. By the President. P. xvii. 127. 
