310 Proceedings of the Royal Society of Edinburgh. 
Sexuales, Production of, in Myzus ribis , by Maud 
D. Haviland, 78-112. 
Shann (E. W.). The Comparative Anatomy 
of the Shoulder Girdle and Pectoral Fin of 
Fishes. {Title only), 254. 
Soil, The Cooling of, at Night, by T. B. 
Franklin, 120-136. 
Sols, Mode of Action of Metal, by C. R. Marshall, 
143-148. 
Special Subscription Fund started, 258. 
Spring Frosts, by T. B. Franklin, 120-136. 
Stephenson (J.) and Baini Prashad. Cal- 
ciferous Glands of Earthworms. {Title 
only), 253. 
and Haru Ram. The Prostate Glands 
of the Earthworms of the Family Megas- 
colecidse. {Title only), 253. 
Subscription Fund, Special, started, 258. 
Synthetiser, A “Duplex” Form of Harmonic, 
by J. R. Milne, 234-242. 
Thompson (J. M‘Lean). The Stelar Anatomy 
of Platyzoma microphyllum, R. Br. ( Title 
only), 254. 
Tosh (James Ramsay), Obituary Notice of, 
15-16. 
Transactions Papers, Index of, published during 
Session 1918-19, 311. 
Watt Centenary Celebration, Prof. Lapworth 
and Prof. Hudson Beare Delegates to, 258. 
Waves, Propapation of Earthquake, by C. G. 
Knott, 157-208. 
Williams (A. M.). The Adsorption Isotherm 
at Low Concentrations, 48-55. 
