SUMMARY OF PROCEEDINGS AT MEETINGS. Xlll. 



2. Prof. Paul gave a lecture entitled " Contributions to 

 the Histological Study of Dentine." With the aid 

 of a series of lantern slides produced from micro- 

 photographs the development of dentine was graphi- 

 cally traced. Many of the slides from which the 

 illustrations were prepared were on view under 

 microscopes, and were inspected with great interest 

 at the close of the lecture. 



The sixth meeting of the thirteenth session was held at 

 University College on Friday, March 17th, 1899. The 

 President in the chair. 



1. Mr. J. Johnstone exhibited with remarks a series of 



microscopic preparations illustrating Spawn for- 

 mation in the Marine Mussel. 



2. The Annual Report of the Sea-Fisheries Laboratory 



for 1898 by Prof. Herdman, A. Scott, and J. 

 Johnstone was submitted (see " Transactions," 

 p. 69). 



3. Mr. I. C. Thompson submitted some notes comparing 



the results of Deep-Sea and surface Tow-Nettings 

 in the Irish Sea (see " Transactions," p. 156). 



4. Prof. Paterson gave a lecture on " Perforations in the 



Parietal Bones, including an account of a micro- 

 cephalic cranium from the Liverpool Museum." An 

 interesting series of photographs were shown of 

 the skulls with such perforations in illustration of 

 the lecture. 



The seventh meeting of the thirteenth session was held 

 at University College on Friday, May 12th, 1899. The 

 President in the chair. 



