PROCEEDINGS OF THE SOCIETY. 
683 
Messrs. Powell & Lealand: — New cheap Oil-immersion 1/12 in. N.A. 
1*28. 
New cheap Oil-immersion 1/20 in. N.A. 1*26. 
Mr. B. W. Priest : — Statoblast of Uruguaya repens Hinde, River Uruguay. 
Mr. C. Rousselet : — Anursea aculeata, A. cochlearis , Asplanchna priodonta , 
Triarthra longiseta, Brachionus angularis. 
Mr. G. E. Smith : — Melaphyre with Agates in situ , Oberstein. 
Silicified Coral, Isastrsea oblonga, Portland, Tisbury. 
Mr. W. T. Suffolk : — Flea mounted in glycerin in 1858. 
Mr. J. J. Vezey: — Multipolar Nerve-cells (Corpuscles) from Spinal 
Marrow. 
Mr. F. H. Ward: — Nitella batracliosperma , species new to Britain. 
Section of Thorn of Rose. 
Portable Stand for Steinheil Lens. 
Messrs. Watson & Sons: — Type Slide of Diatoms from St. Peter. 
Pollen of Mai ope. 
Type Slide of Spines of Echini. 
Transverse Section of Ascaris, showing Oviducts, Uterus, Ali- 
mentary Canal, &c. 
Tentacle of Snail, showing Eye. 
Section of Wall of Pitcher-jdant, showing Glands. 
Mr. T. Charters White : — Album of Photomicrographs. 
Horizontal Section, Human Scalp. 
Cartilage of Sheep. 
Dental Exostosis. 
The second Conversazione of the Session was held at 20, Hanover 
Square, on Wednesday, the 30th April, 1890. 
The following objects, &c., were exhibited : — 
Rev. G. Bailey: — Spicules and Foraminifera washed from base of 
Euplectella. 
Mr. C. Baker : — Zeiss’s Apochromatic Objectives. 
Photomicrographs produced with Apochromatic Objectives. 
Zeiss’s Stand I a with new Mechanical Stage. 
Mr. W. A. Bevington : — Polycystina. 
Mr. P. Braham : — Crystallization of Metals by Electricity. 
Crystals of Gold and Antimony in Carbon Disulphide. 
Mr. E. T. Browne : — Achorutes purpurescens. 
Smynthurus niger. 
Mr. C. Haughton Gill: — Diatoms prepared by new process to show 
markings more clearly. 
Mr. W. Godden : — Photomicrographs of Greek and Graeco-Roman Gems 
and Coins. 
Mr. J. D. Hardy : — Search-tank and Microscope. 
Mr. R. T. Lewis: — New Zealand Coccidae. 
Mr. R. Macer : — Fredericella sultana. 
Desmids. 
Prof. Maskell : — Inglisia Fagi , I. Leptospermi , and I. patella from New 
Zealand. 
