VI 



INDEX. 



PAGE. 



CoRRESPONDENCK Continued. 



Clearing fluid 119 



Device for mounting 140 



Glycerin in mounting 140 



Homogeneous immer.sion 79 



Mailing packages of diatoms . . . . 100 



Measurement of blood-corpuscles . 17 



Mounting. Catching insects . . . 118 



Objectives — Pond life 200 



Parasite of a grassiiopper 220 



Qiiestions about mounting 119 



Removing air in mounting 18 



Resolution by central light 118 



Resolution of amphipleura 118 



Stainingand mounting casts, etc.. . 240 

 The 'Congress' nose-piece . 38, 58,78, 



' The science of fibrine ' 18 



White zinc for mounting 220 



Cover-glass, German 99 



Cox, J. 1)., address 166 



new stand bj 65 



structure of the diatom-shell . 45, 66 



85, 104, 112 

 Critical point in fluid cavities of min- 

 erals, apparatus for determin- 

 ing the, A. A. Julien 189 



Crystallization of allotropic sulphur. i 

 Cviltivating micro-organisms, G. M. 



Sternberg 183 



micro-organisms on fluid and 



gelatinous media. T. Smith . . 185 



Cyclidium litomesum 230 



Daphnia, sense of color of 77 



Desmids of the United States 116 



Diatoms, filamentous projections on 176 



structure of 53 



Diatom-shell, structui-e of the, J. D. 



Cox 45,66,85,104,112 



Disease, micro-organism of 55 



Dolley, C. S., an outline study of 



nervous development 61 



Drawings, multiplying 207 



Drugs and medicines of North Amer- 

 ica 117 



Durkee, R. P. H., mounting in bal- 

 sam in cells 84 



Dust, volcanic loi 



Electric light in microscopy ... 19. 115. 



119, 138 



Electric light for the microscope . . . 222 



Epistylis vaginula 227 



Ethyl-ether of gallic acid, prepara- 

 tion of, R. D. Coale 82 



Euplotes plumipes 228, 229 



Eye of flea 20 



E^'e-piece indicator 8 



micrometer, a new 52 



Eye-shade for monocular microscopes, 



R. H. Ward 82 



Fibres, vegetable, mounts of 200 



Fine-adjustment, Swift's 26 



Flea, eye of 20 



Flies, how adhere to smooth surfaces 99 



Fly, the wine 103 



Fungi in sewerage 161 



PAGE. 



Fungoid diseases, committee to study 179 



General i-emarks 212 



Germs in air of sick rooms, destruc- 

 tion of ,. . 58 



Glycerin in mounting 15 



Grape-vine, fungus on 5 



Grasshopper, parasite of 220 



Griffith, new turn-table 207 



Grifiith's turn-table 126 



Growing slides 141 



Gundlach Optical Co 159 



Gundlach, E., improvement in objec- 

 tives .... 168 



magnifying power 205 



Hair, microscopical examination of . 162 



Hairs, cutting sections of 13 



Hazlewood, F. T. , blue staining ... 83 



Hearing sense of insects 16 



Hervey, A. B., translating Behren's 



work 38 



Homogeneous immersion fluids ... 79 



Hydra, experiments on 38 



new method of mounting .... 49 



Hj'menostoma hymenophora 123 



Ice, organisms from 239 



Illumination for microscope 222 



Illuminator, Abbe 22 



Bausch (& Lomb's 126 



Lighton's a 102 



Illustrations for Journal 14 



Indicator, a simple eye-piece .... 7 



Indigo-carmine, preparation of . . . . 199 



Infusoria, action of quinine on ... . 20 



new fresh-water, A. C Stokes 24, 25, 



121, 142, 226 

 Infusorian belonging to the genus 



Pyxicola, a new, A. C. Stokes 24 



in the water of San Francisco, 



A. H. Breckenfeld 4 



Insects, catchiVig and mounting . . . ii8 



sense of hearing in 16 



Journal for the year, the 12 



the 99, 212 



Julien, A. A., immersion apparatus 

 for determining critical point 



, in fluid cavities of minerals . . 1S9 

 c^ld^llicott, D. S., ' i'he Science of Fi- 



i- brine' 18 



Killing delicate organisms 112 



Koch's method of staining the bacillus 



of tubercle 196 



pavilion at Berlin 89 



Lamps, Beck's & Bulloch's 203 



Lard, adulteration of 23 



Libbey, W. , Jr., celloidine as an em- 

 bedding mass 1S3 



Lighton's immersion illuminator . . . 102 



Lingula, histology of. H. G. Beyer . . 187 



Litonotus helus 123 



Litonotus pleurosigma 123 



Lockwood, S.. the wine fly 103 



Magnification and tube-length .... 21 



Magnification. O. W. Holmes on . . . 178 



Magnifying power, E. Gundlach . . . 205 



Material for distribution 35, 235 



Medical education 78 



