of Edinburgh , Session 1867-68. 
379 
3. On the Products of the Destructive Distillation of Animal 
Substances. Part V. Action of Sodium on Pyridine. By 
Professor Anderson, Glasgow. 
4. On the Structure of the British Nemerteans; and new 
British Annelids. By W. Carmichael McIntosh, M.D. 
F.L.S. 
In the first part of this paper the anatomy and physiology of 
the Ommatopleans is described from the typical form 0. alba , the 
variations and peculiarities presented by other genera and species 
being contrasted therewith. The descriptions are grouped under 
the following heads : — Dermal Tissues ; Proboscidian Sheath ; 
Proboscis; Digestive, Circulatory, and Nervous Systems ; Cephalic 
Furrows, Pits, and Glands ; Organs of Reproduction and Develop- 
ment. 
The second part consists of the structure and physiology of the 
Borlasians, under the same (or similar) heads ; together with such 
anomalous genera as differ from both great groups of Nemerteans. 
The third division treats chiefly of the structure of certain (up- 
wards of forty) Annelids new to science or to Britain. 
The following Gentlemen were elected Fellows of the 
Society 
Rev. Thomas Guthrie, D.D. 
Thomas Key, Esq., Dep.-Inspector Gen. of Hospitals. 
Adam Gillies Smith, Esq., C.A. 
John MacMillan, Esq., M.A. 
The following Donations to the Library were announced:-—* 
Boeck (Thorvald). Oversight over Literattur, Love, Forordninger 
Rescripter M.M. Vedrorende de Norske Fiskeriar. Christiania, 
1866. 8vo .— From the Author. 
Broch (Dr 0. J.). Traite Elementaire des Fouchons Elliptiques. 
Fasc. 1. Christiania, 1866. 8vo .- — From the Author. 
