11 proceedings of the 



29th May, 1888. 



Mr. Thomas King, Vice-President, in the Chair. 



Mr. Richard M'Kay reported on an excursion made to Dairy 

 on 26 th in St. 



The Chairman made some remarks on plants observed by 

 him when visiting Langbank on 26th inst., among which were 

 ErophUa vulgaris, DC, Sisymbrium Thaliana, Hook., Lepidium 

 Smithii, Hook., Stellaria nemorum, L., Vicia angustifolia, Roth, 

 Chrysosplenium altei'nifolium, L., Valerianella oliioria, Moench, 

 Taraa:acum officinale, Web., var. palustre, DC, Myosotis versi- 

 color, Reichb., Veronica montana, L., etc. 



He also exhibited specimens of Draba muralis, L., from 

 Innellan. 



Mr. Henry M'CuUoch showed a specimen of the Great Spotted 

 TV'^oodpecker, Picus major, L.. killed at Kildalton in December 

 last, and kindly lent by Mrs. Ramsaj', Kildalton, for exhibition 

 to the Society. 



Mr. Walter N. Robinson exhibited two living Ringed Snakes, 

 Tropidonotus natrlx, Ray, both measuring over 30 inches in 

 length. For comparison, specimens of two allied species — Tropi- 

 donotus stolatus, L., from Ceylon, and T. subminitatus, L., 

 from Siam— were shown by Mr. R. Broom, B.Sc. 



Mr. Broom also exhibited several Trilobites, and made some 

 remarks on the structure of the eye of these fossil Crustacea, 

 as illustrated by one of the specimens, in which the individual 

 lenses forming the eye could be distinctly observed. 



Mr. R. Turner read a paper on "Diatoms," in which the 

 structure and modes of reproduction of these plants were 

 described, and an account given of recent researches as to the 

 development of the auxospore. The paper was illustrated with 

 diagrams, and photographs of several species. 



12th June, 1888. 



Mr. Peter Ewing, Vice-President, in the Chair. 



The Chairman exhibited growing plants of Thlaspi alpestre, L., 

 and Claytonia perfoliata, Don, which had for some time been 

 under cultivation by him. 



Mr. Johnsrton Shearer exhibited part of a branch from an 

 unusual variety of Hornbeam (Carpinus), grown on the estate 

 of Rosehall, near Glasgow, and remarkable for its long, thin, 

 drooping branches. 



Mr. James J. F. X. King showed some exceptionally small 

 specimens of Chcetopteryx viUosa, F., collected by him at 

 Wanlockhead. 



