570 



Mr. G. S. Barton : Four slides showing : (1) " Bovine " tubercle 

 bacilli, isolated from cow's lung; (2) tuberculous milk, from a 

 case of advanced " tubercular mastitis " ; (3) gonococcus pus ; 

 (4) anthrax (commonly called wool-sorters' disease) from spleen 

 of guinea-pig, inoculated from pus taken from malignant 

 pustule. 



May 1st, 1903. 



Mr. T. N. Cox : Asellus aqiiaticus (Water Hog- Louse). An 

 Isopod crustacean. Common in stagnant ponds. Showing 

 circulation of the blood in all parts of the body. 



Mr. A. E. Hilton : Transverse section of bark of willow, Salix 

 Russelliana. This bark yields salicin, an alkaloid used in the 

 adulteration of sulphate of quinine. Shown with polarised light. 



Mr. W. Wesche : Two dissections of posterior thoracic spiracle 

 of Eristalis te7iax, L., from Jersey, showing Burmeister's plates : 

 (1) The female shows the plates as 11-9 in number ; (2) the male, 

 as 12-12 in number. The discovery of this organ by Burmeister 

 was announced in 1836. The plates are also present in E. 

 arhustoru7n, L., but very faint; apparently eight in number. 



Mr. H. Morland : Triceratiwni forresterii, Tempere. Possibly 

 a variety of T. plano-concavum, J. Br. A very rare form found 

 in " cementstein," from Sendai, North Japan. Figured and de- 

 scribed in vol. i. of " Le Diatomiste," PI. I., fig. 2, p. 5, from 

 William's Bluff deposit, Oamaru. Also an abnormal form of 

 Coscinodiscus Ociilus-Iridis, and the typical form of Aulacodiscus 

 nigricans, Temp, and Brun, both the latter being from Sendai, 

 North Japan. 



May 15th, 1903. 



Mr. A. Earland : Artificial casts (internal) of foraminifera in 

 paraffin wax, showing the exact shape of the sarcode body of the 

 animal. Made by Mr. Quilter. 



Mr. W". B. Traviss : Common paste eels, Anguillula sp., not in 

 contact with cover-glass, showing the peculiar rhythmic undula- 

 tions performed in unison by many individuals. 



Mr. A. E. Hilton : Male organ of the Loosestrife Bee, Macropis 

 labiata. Mounted in glycerine, without pressure. 



