( 7 ) 
(5) Microscopical Optics and Manipulation. page 
Nelson, E. M . — Method of Detecting Spurious Diffraction Images (Fig. 28) .. .. 242 
Leroy, C. J. A . — Method for measuring' the Spherical and Chromatic Aberration 
of Microscopic Objectives .. .. 243 
(6) Miscellaneous. 
Hudson’s (Dr.) Presidential Address, The “ Times ** on 244 
New Italian Microscopical Journal 247 
Frey, Prof., The late 247 
Microscopy at the Paris Exhibition 248 
Price of the new Objective of i’ 63 N. A .. ,. 248 
\ 
/ 3 . Technique. 
Cl) Collecting: Objects, including: Culture Processes. 
EbeRTH, C. J, — Friedldnder's Microscopical Technique for Clinical and Pathological 
Purposes 248 
Roberts, H. L . — Artificial Cultivation of Bingworm Fungus 248 
(2) Preparing* Objects. 
Vosmaer, G. C. j . — Mode of Studying Free-swimming Larvm 249 
Perrier, R . — Examination of Renal Organ of Prosobranch Gastropoda 249 
Wheeler, W. M..— Mode of Preparing Ova and Embryos of Blatta Doryphora .. 250 
Lippitsch, K . — Investigation of Derostoma unipunctatum 251 
Gutzeit, E . — Preparation of Horny Teeth of Batrachian Larvse 251 
Vries, H. de — Production of Colourless Spirit-preparations 251 
Campbell, D. H . — Observation of Nuclear Division in Plants 251 
Harz, 0. O . — Fixing the Spores of Hymenomycetes 252 
Bertot — Direct Impressions of Plants 252 
Bliesener — Demonstrating Tubercle Bacilli 252 
Gervis, a. — Agar-agar as a Fixative for Microscopical Sections 252 
(3) Cutting:, including- Imbedding- and Microtomes. 
Apathy, S. — Florman*s Method of Imbedding in Celloidin 253 
(4) Staining- and Injecting-. 
Kcb^ie’s Methylene~blue Method of Staining Bacteria .. .. 254 
(5) Mounting-, including: Slides, Preservative Fluids, &c. 
Bryan, G. H . — Neio Form of Clip for Balsam Mounting (Fig. 29) 255 
Schilbersky, K., Jun . — Quich Method of Mounting Microscopical Preparations .. 257 
Vosseler, j. — Venetian Turpentine as a Mounting Medium 258 
Debes, E . — Fixatives for Diatom Preparations 259 
Dor, L . — Sterilization of Water by the Chamberland Filter 260 
Errera, L . — Microchemical Test for Alkaloids and Proteids .. .. 260 
Katz, O. — Air-gas^' for Bacteriological Work 260 
(6) Miscellaneous. 
Changes in the Firm of Zeiss 260 
Correction by Dr. H. van Heurck 260 
New Photograph of P. angulatum, by Dr. H. van Heurck 261 
Nelson, E. M . — The Formation of Images in the Pleurosigma foi'mosum .. 261 
Proceedings of the Society 
262 
