INDEX. 



Paraffin Imbedding Dish, A Convenient, 56. 



Paraffin Imbedding- Dish, Improved, 11. 



Paraffin Imbedding, Points on the Tech- 

 nique of, 63. 



Paraflin Imbedding Table, An Improved, SS. 



Paraffin Sections, A Cabinet for, 109. 



Paraffin Sections, The Cutting of, 87. 



Paraffin Sections, To Stain, 103-105. 



Parthenogenesis, bel Antennaria alpina, 196. 



Pathogenic Organisms, Detection of, 175. 



Pathology, Class Technique in, 9. 



Perenyi, Formula, 18. 



Permanence of Stains, 98. 



Permanent Stain for Starch, 181. 



Persistence of Bacteria in the Milk Ducts 

 of the Cow's Udder, 205. 



Petrographical Microscope for Determining 

 the Positive or Negative Character of 

 Mineral Plates in Polarized Light. 20. 



Petrography in the Michigan College of 

 Mines, 187. 



Pflanzenkernes, ueber die Reductionsthei- 

 lung des, 197. 



I'hagocytosis, Method for Demonstrating, 

 202. 



Photographic Dodges, Two, 73. 



Photographic Plates, Collection of Pond 

 Life on, 115. 



Photography in the Biological Laboratory. 

 18. 



Photo-Micrographic Apparatus, A Make- 

 shift, 77. 



Photo-Micrographlc Camera and Condens- 

 ing System, New Forms of, 117. 



Photo-Micrographic Camera, A Practical, 

 94. 



Photo-Micrographs, Mitosis Illustrated by, 

 47. 



Photo-Micrography, The Centration of the 

 Electric Arc in, 115. 



Physiological Experimentation, Low Tem- 

 peratures for, 192. 



Picro-Acetic Solution, 82. 



Picro-Carmine and Alum-Carmine as Coun- 

 ter Stains, 174. 



Plaeodorina illinoisensls, Plankton Studies, 

 216. 



Plants, Oxygenating, for Aquaria, 193. 



Plant Tissues, The Use of Soap for Imbed- 

 ding, 68. 



Plasmodia, To Fix and Stain, 97. 



Plasmodia, to Transfer to Glass Slides, 2. 



Plates, Mineral, to Determine the Char- 

 acter of in Polarized Light, 20. 



Platinum Chloride for Demonstrating Fib- 

 rils of Striated Muscle, 3. 



Polychaete Annelids, Studies on the Cen- 

 tral and Peripheral Nervous Systems of, 

 219. 



Pond Life, Colection of on Photographic 

 Plates, 115. 



Pontederlaceae, A Contribution to the Life 

 History of, 198. 



Pork, Inspected by the Government, 14. 



Portable Microscope, A New, 136. 



Postal Microscopical Club, American. 181. 



Potassium Bichromate Solution for Clean- 

 ing Glass, 123. 



Powdered Drugs, The Use of the Micro- 

 scope in the Detection of Adulterants 

 in, 119. 



Preparing Fresh Sections for Microscopic 

 "Work, A Modification of Cullen's 

 Method, 153. 



Preservation of Culture Media, Agar-Agar, 

 106. 



Preservative for Fresh Water Sponge, 73. 



Preserving Culture Media, Method of, 72. 



Projection Microscope, A New Departure, 

 194. 



Protoplasm, Its Rate of Motion in the 

 Cell, 73. 



Pyrenomycete, New Species, 216. 



Quantitative Determination of the Adulter- 

 ation of Wheat Flour with Maize Pro- 

 ducts, 122. 



Quick Method of Preparing Sections of Tis- 

 sue for Class Use, 33. 



Quick Way of Preparing Agar, 8, 62. 



Radiolaria in Early Paleozoic Rocks, 185. 



Rapfa Staining Apparatus, 169. 



Reagent Bottle, 203. 



Reagents for Killing Plasmodia and Myxa- 

 moebae, 16, 97. 



Recherches cytologiques sur la ceilule de 

 levure, 197. 



Red Corpuscles of Human Blood, Average 

 Measurements, 185. 



Refractive Index and Alcohol-Solvent 

 Power of a Number of Clearing and 

 Mounting Media, 220. 



Relationsi;iips of the Bacteria, 183. 



Representative American Laboratories, Cor- 

 nell, 23. 



Rheotropism in Plasmodia, 2. 



Rogers, Wm. A., A. M., Ph. D., LL. D., 

 155. 



Root Pressure Apparatus and Osmometer, 

 56. 



Rosanilin Dyes— Their Relation to Micro- 

 scopy, 59. 



Rose-Bengale for Demonstration of Early 

 Amyloid, 62. 



Royal Microscopical Society, Standard Mi- 

 croscope Screw of, 151. 



Sauer-Kraut, Bacteriological and Chemical 

 Studies of, 222. 



Scheme for Counting Colonies of Bacteria 

 in Petri Dishes when the Colonies are 

 Small and Very Numerous, 84. 



Screen for Use in Microscopic Work, 125. 



Section Cutting, A Method of Improving 

 Paraffin for, 67. 



Sectioning of Seeds, The, 32. 



Seeds, Mature, Some Methods in the Study 

 of, 37. 



Sense Organs in Annelids, 219. 



Short Working Distance of Microscope: 

 Cause, 6. 



Shrinking of Tissue, to Prevent, 152. 



Silver Nitrate Method of Staining Endo- 

 thelial Cells, The Use of Formalin in, 83. 



Simple Method of Culture of Anaerobic 

 Bacteria in Liquid Media, 34. 



Simple Steam Sterilizer, A, 33. 



Slide Boxes, Improvements for, 224. 



Slides, to Clean with Lye, 149. 



Soap, the Use of, for Imbedding Plant Tis- 

 sues, 68. 



Solution for Macerating and Staining Ver- 

 tebrate Nerve Tissue, 152. 



Solution for Making Neuroglia Prepara- 

 tions, 201. 



Some Methods of Determining the Positive 

 or Negative Character of Mineral 

 Plates in Converging Polarized Light 

 with the Petrographical Microscope, 20. 



Spermatogenesis of Scyllium canicula, 199. 



Spermatozoids of Gingko, 183. 



Spherical Aberration; Some Causes and 

 the Remedy, 6. 



Spindles, Multipolar, of Plant Cells, 183. 



Spirogyra, Nuclear Division of, 201. 



Sponge, Fresh Water, A Preservative for, 

 73. 



Spores, to Demonstrate the Distribution 

 of, 220. 



Spores of Mycetozoa, Germination of, 1. 



Sputum, Microscopical Examination of. 84. 



Sputum, Rapid Hardening of, 222. 



Staining Apparatus, Rapid, 169. 



Staining and Clearing: 



Carbolic Acid for Clearing, 152. 



Clearing Agents, 104, 220. 



Counter Staining with Eosin and 



Haematoxyil, 102-104. 

 Decolorizing with Acid Alcohol, 104. 

 Nuclear and Protoplasmic Stains. 102. 

 Picro-Carmine and Haematoxylin for 



Embryonic Cartilage Cells, 174. 

 Safranin-Gentian- Violet Orange Triple 



Stain, 196. 

 Staining and Fixing Blood Preparations, 



Method for, 133. 

 Staining Haematozoa of Malaria, 35. 

 Staining and Macerating Medium for 



Vertebrate Nerve Tissues, 152. 

 Staining Nerve Tissues, The Methvlen 



Blue Method for, 64. 

 Staining Yeast, 97, 223. 

 To Double Stain Bacteria, 190. 212. 



