( 7 ) 
(5) Microscopical Optics and Manipulation. pagr 
Czapski, S. — Abbe’s Method and Apparatus for the Determination of Focal Lengths 
(Figs. 76-80) 678 
„ „ The Dioptric Conditions for the Measurement of Optic Axial Angles 
by means of the Polarization Microscope . . . . 688 
D’Ogagne — Geometrical Representation of the Formula for Lenses 683 
Nelson, E. M . — Rings and Brushes (Fig. 81) .. .. 683 
(6) Miscellaneous. 
Ward, R. H . — Microscopes and Accessories at the Antwerp Microscopical Exhibition 684 
Bonney, T. G . — The Microscope’s Contributions to the Earth’s Physical History .. 688 
/ 3 . Technique. 
Klein, L . — Microtechnique of Vegetable Objects 689 
Cl) Collecting 1 Objects, including Culture Processes. 
Trambusti, A . — Apparatus for Cultivating Anaerobic Micro-organisms on Solid 
Transparent Medici .. .. .. 691 
Ogata, M . — Apparatus for Cultivating Anaerobic Bacteria 691 
DziEiiZGOwsKi, S. v., & L. y. Rekowski — Apparatus for Evaporating Fluids at 
Low Temperatures (Fig. 82) 692 
Quenu — Neio Method for Ascertaining the Temperature of Sterilizing Ovens .. .. 693 
Reinsch, A., & R. Wollny — Cold-sterilized Albuminous Nutrient Media .. .. 693 
Schluter, G . — Growth of Bacteria on Acid Nutritive Media 694 
Holm, J. 0 . — Pure Cultivation Methods and Specially Koch’s Plate Cultivation and 
the Limit of Error of this Method . . . . 695 
Braatz — Preparing Catgut 695 
(2) Preparing Objects. 
Haswell, W. A . — Simple Method of Substituting Strong Alcohol for a Watery 
Solution in the Preparation of Specimens (Fig. 83) .. .. .. .. 696 
Macallt m, A. B . — Investigation of Blood of Amphibia 698 
Boyer, E. R . — Examination of Teleostean Ova 699 
Hatta, S . — Study of Germinal Layers of Petromyzon 699 
Fischer, D.— Preparing Liver of Gastropoda and the Reconstruction of Organs . . 700 
Erlanger, R. v . — Investigation of Nephridia of Prosobranchs 700 
Herdman, W. A., & J. A. Clubb — Preparation of Nudibranchs .. .. .. .. 701 
Kishinouye, Kamakichi — Study of Development of Limulus longispina 701 
Ward, H. B . — Investigation of Nectonema 701 
Antipa, G . — Examination of Lucernariidx 702 
Muir, R . — Method of Examining Blood , Bone-Marrow , and Body Juices 702 
Lepkowski, W . — New Method of Preparing Dentine 702 
Flatters, A . — • Preparation of Vegetable 'Tissues 702 
(3) Cutting, including Imbedding and Microtomes. 
Strasser, H . — Ribbon Microtome (Fig. 84) .. .. .. .. .. 703 
Taylor’s (T.) Freezing Microtome (Fig. 85).. .. 705 
Eternod — New Cup for Sections (Figs. 86-8) 705 
To remove Oil and Grease from Whetstones 706 
Kuhne, H . — Oil of Anise-seed as an Imbedding Medium for the Freezing Microtome 706 
Brunotti, C . — Method of Cold-imbedding in Gelatin 706 
(4) Staining and Injecting. 
Burger, O. — Methylen-blue Staining of Nervous System of Invertebrata 707 
Huber, G. C . — Permanent Preparations by Golgi’s Method 7<>7 
Sabouraud — Staining Fibrin . . . . 708 
„ Some Facts about Lustgorten’s Method for Staining Syphilis Bacilli 708 
Dahmen — New Method for Finding Tubercle Bacilli in Sputum 708 
Kuhne, H. — Malachite-green as an Extracting Pigment .. .. 708 
Aubert, A. B . — Double and Metallic Stains 709 
(6) Miscellaneous. 
Wethered’s Medical Microscopy .. 711 
Moore, S. Le M . — Reactions of Callus and Paracallus 711 
Proceedings of the Society 
712 
