PROCEEDINGS OF THE SOCIETY. 719 



Kidneys, &c., double stained. (4) Long. Section of Vertebrae of Unman 

 Foetus, two montbs, showing centres of ossification. (5) Group of 

 Diatomaceae ; wheels of Chirodota, Butterfly scales, &c. 

 Mr. C. West : — (1) Nodosaria consohrina d'Orb. (2) Giistellaria tenuis 

 Bomemann. 



The second Conversazione of the Session was held on the 1st May, 

 1889. 



The following objects, &.C., were exhibited : — ■ 



Mr. J. Badcock : — LopJiopus cristaUinus. 



Mr. C. Baker: — (1) Zeiss's new cheap Oil-immersion Objective 1/12 in. 

 N.A. 1-20. (2) Zeiss's Apochromatic 8-0 mm. (1/3 in.). (3) Zeiss's 

 Apochromatic 6-0 mm. (1/4 in.). (4) Nelson Model Microscopes. 

 (5) Portable Binocular Microscope. (6) Portable Medical Micro- 

 scope. (7) Asterina gibbosn. (8) Actinomycosis in tongue of Cow. 

 (9) Zeiss's Apparatus for Monochromatic Light. 



Dr. G. P. Bate: — (1) Amphipleura pellucida, with 1/16 in. (2) Podura 

 scale with 1/16 in. 



Messrs. E. and J. Beck: — (1) Human Spermatozoa showing filament. 



(2) Podura scale with 1/12 in. Oil-immersion. 



Mr. W. A. Bevington: — Planchonia fimbriata, a new coccid from British 



Guiana. 

 Mr. Bolton: — (1) Cristatella mucedo, young stage. (2) Larvae oi Lepto- 



pldebia marginata. 

 Mr. \V. G. Cocks:— (1) Eplstylis. (2) StepJianoceros EicMornii. 

 Mr. A. C. Cole:— (1) Section of Eye of Infant. (2) Ditto of Pike. 



(3) Series of sections of Snake which was killed soon after it had 

 devoured a Lizard. Sections through the Lizard are seen in the 

 stomach of the Snake, whilst the stomach of the Lizard is full 

 of Insects, so little digested that the species are recognizable. 



(4) THceratium undulahim, Oamaru. 

 Mr. E. Dadswell : — ConochUus volvox. 



Mr. J. Deby: — (1) Microscope by Baker and Son, London. (2) Ditto 

 by Chevalier, Paris. (3) Ditto by Oberhauser, Paris, 1838. (4) Ditto 

 by Plossl, Vienna. (5) Ditto by Seibert, Wetzlar. (6) Brugsmannia 

 Loioii. Stained sections of the ovary and stamens, exhibiting the 

 gradual development of the male and female organs out of apparently 

 homogeneous, axial parenchyma. (7) Sponge spicules, the cavities 

 of which are filled by a siliceous coloured core, supposed to have 

 replaced the original living protoplasm. 



Mr. F. Enock : — Slides showing life-history of the Hessian Fly, Ceci- 

 domyia destructor. 



Mr. E. T. Lewis: — (1) Male oi Icerya purchasiirom Natal. (2) Spinous 

 hairs on Larva sp. (?) from Natal. 



Mr. E. Macer : — CarcJiesium polypimtm ? 



Mr. G. E. Mainland : — (1) Linyphia montana <J , Eggs and Pupal Organs. 

 (2) Walckenaera acuminata 9 j Eyes on prominence. 



Mr. E. M. Nelson : — Apparatus for exhibiting 1/2500 of an inch without 

 a lens. 



Mr. F. A. Parsons : —Cordylophora lacustris. 



Messrs. Powell and Lealand : — AmphipJeura pellucida, with 1/12 in. 



