CONTENTS. 



XXXI 



PAGE 



Knife for Large Sections. {Fig.l^B) Part 5 842 



Making Sections very quickly ,, 843 



Cutting Sections of Myxomycetes, ^c „ 844 



Dayton's Cell. (Fig. 19d) „ 844 



Fluid for Mounting Infusoria, Alg(B, (^0 „ 845 



Presenative Fluids for Botanical Preparations „ 845 



Chloral Hydrate for Preserving Tissues „ 847 



Chalon's Microscopic Finger „ 847 



Mounting Opaque Objects „ 847 



Preparing Cuticles of Plants ,, 848 



Mounting Baphides „ 849 



Preparing Crystals of Metals „ 850 



Blue Glass for Test Objects „ 850 



Armstrong's Universal Turntable. (Fig. 200) „ 850 



AylvMrd's " Concentric " Turntable. {Fig. 201) . . . . „ 851 



Photographing Bacteria ,, 851 



Gunther's Photographs of Pleurosigma angulatum. (Fig. 



202) „ 853 



Cohen and Grim-m's Microphotograpjhs of Minerals and 



Rocks „ 854 



Examining and Testing minute Particles of Blood .. .. ,, 855 

 Microscopical Examination of Handwriting — Detection of 



Forgeries by the Microscope „ 856 



Smoke and Steam under the Microscope „ 864 



Microscopical Representation of Physiological Movements . , „ 864 

 Multiple Staining of Animal Tissues with Picro-carmine, 

 Iodine., and Malachite-green Dyes, and of Vegetable 

 Tissues with Atlas-scarlet, Soluble Blue, Iodine, and 



Malachite-green Dyes Part 6 868 



Fine Rulings „ 949 



Koch's New Method of Pure Cidtivation of Bacteria ,. .. „ 950 



Sterilization of Animal and Vegetable Liquids „ 952 



Hardening the Spinal Cord .. • ,, 952 



Transferring Sections froyn Alcohol to another Fluid . . .. „ 953 



Imbedding in Paraffin and Freeing the Sections ,, 953 



Imbedding in Paraffin „ 954 



Taylor's Freezing Microtome „ 954 



Waller's Section-knife for Large Sections. (Fig. 226) .. ,, 954 



Staining of Living Unicellular Organisms ,, 956 



Klein's Cochineal Fluid ,, 956 



Purpurine for Staining Fcetal Vertebras ,, 957 



Cements and Cementing ,, 957 



Preserving Cover-glasses. (Fig. 227) „ 958 



Sidle's " Congress " Turntable. (Figs. 228 and 229) . . „ 959 



New Process for Preparing the Brain ,, 960 



Action of Concentrated Osmic Acid on Bone-cells .. . . „ 960 



Mounting Chick Embryos whole „ 961 



Mounting Echinoderm Larvce „ 961 



Mounting Class „ 962 



Mode of Detecting Adulterations in Flour by the Micro- 

 scope „ 962 



