( 7 ) 



(4) Photomicrography. page 



Lehmann, O. — Photomicrography of Chemical Preparations 293 



Neuhaus's (R.) Photomicrographic Camera (Fig. 56) 293 



Stein's (S. T.) " Large Photomicroscope " (Fig. 57) 295 



Truan, A., & O. Witt — Photomicrographs of Diatoms 295 



(5) Microscopical Optics and Manipulation. 



Dallinger, W. H. — Advantages of a Knowledge of the Theory of the Microscope . . 296 



Fasoldt's Test-plates 298 



Dallinger, W. H. — Daylight or Lamplight for Microscopical Observation .. . . 302 

 Nelson, E. M. — Curious interference Phenomena toith Amphipleura pellucida 



(Figs. 58 and 59) 302 



Spectra of Pleurosigma angulatum 303 



0. Technique. 

 (1) Collecting: Objects, including- Culture Processes. 



Potts, E. — Collecting, Growing, and Examining Fresh-water Sponges 305 



Eisenberg, J. — Potato Cultivations 310 



Plaut — Sterilization of Potato, Apples, and Water for cultivation purposes .. .. 310 



(2) Preparing- Objects. 



Lowenthal, N. — Demonstrating the Reticulated Protoplasm in the Interstitial Cells 



of the Ovary 311 



Nansen, F. — Methods of investigating Structure of Nerve-tissues 312 



Biondi, D. — New Method for Investigation of Blood 313 



Wray, R. S. — Methods of studying typical Bird 's Feather 314 



Jackman, W. S. — Mounting Tape-worms 314 



Reynolds, R. N. — Reeves's Method 314 



Zihmermann, A. — Mode of rendering visible the closing Membrane of Bordered 



Pits 315 



Pantanelli, D. — Mounting small Organisms — Disaggregation of Rocks.. .. .. 315 



(3) Cutting-, including Imbedding. 



Moll, J. W. — Application of Paraffin Imbedding in Botany , 315 



Pfitzer, E. — New Imbedding Material , 316 



Dale's (H. F.) Microtome (Figs. 60 and 61) 317 



(4) Staining and Injecting. 



D'Abundo, G, — Staining Cultivation Media and its results on micro-organisms .. 319 



Maetinotti, C. — Nitrate of Silver Method 319 



(5) Mounting, including Slides, Preservative Pluids, &o. 



Ward, R. H. — Indexing Microscopical Slides 320 



(6) Miscellaneous. 



Engelmann, T. W. — Colouring matter of blood as a means for distinguishing 



between the gas exchange of plants in light and darkness .'. .. 322 



Oliver, F. W. — Microchemical Tests for Callus 323 



Proceedings of the Society 325 



