674 



INDEX. 



Smith, K. M., and anotlier, Collar Cavities 

 of Larval Amphioxus, 256 



— and others, Collar Cavities of Larval 



Amphioxus, 446 

 Smith, r. E., Effect of Extirpating Hypo- 



phvsis on Growth and Development 



of Frog, 286 

 Smith, T,, Choice of Glass for Cemented 



Objectives, 620 



— Measuring the Focal Length of a 



rhotographic Lens, 631 • 



— Notes on the Calculation of "Thin 



Objectives," 628 



— Tracing Rays through an Optical 



System, 631 



Smolak, J., and others, Plant Diseases, 

 329-332 



Smut Diseases of Wheat, L52 



Snakes, Poison Glands, 449 



Snow. Red, Dinoflagellates as Originators, 

 606 



Snow-fiekl and Glacier Oligochseta, 125 



Soar. C. D., New Water Mites, 464 



Sodium Chloride, Toxic Effect on Menin- 

 gococcus, 249 



Solen, Structure, 212 



Soulier, A., Vitelline Membrane of Ser- 

 pulids, 222 



Spaeth, R. A., Melanophores of Fundulus, 

 449 



iSpara^sis radicata sp. n., 491 



Sfiarrows and Fowls, Tapeworms, 126 



Spawn of Spio martinensis Mesn., 123 



Spawning and Exuviation in Arenicola, 

 124 



Specimens, Zoological, Making Trans- 

 parent, 170 



Spencer Delineascopes. 629 



— Demonstration Ocular, 629 



— Mon-objective Binocular Microscope, 



628 

 Spermatocyte^, Human, Chromosomes, 281 

 Spermatogenesis in Columbella, 211 



— oi Polytrichum juniper ilium, 480 

 Spermatogonia and Sex-cords, Origin in 



Male Chick, 109 

 Spermatopliores of New Cephalopod, 113 

 Spermatozoa, Atypical, in Moths, 583 



— in Solution, Life, 381 



— of Horse, Life outside of the Body, 381 

 Spermatozoids of FucaeefB, 408 

 Spermine, Occurrence, 381 

 Spermothamnion roseohim, 406 

 Spessard, A., Lycopodium prothallia in 



America, 314 

 ^plixracca v)lcox, 353 

 Sphagna, European, Synopsis, 404 

 Sphagnace.'E, Australian, 143 

 Spicaria Parasitic on a Myxomycete, 325 

 Spicules. Gelatinous in a New Genus of 



Siliceous Sponges, 130 

 Spiders, Cribellate, Mating, 220 



— Eggs, Toxins, 120 



Spiders, New South African, 463 



Sjjinal Fluid, Action in Stimulating 



Growth of Meningococcus, 633 

 Spiny Lobster, Reproduction, 121 

 !<pio martinensis Mesn., Spawn, 123 

 Spirochxta forans, 633 



— iciero-hxmorrharjica. Culture, 344 



— — Staining. 256 



— morsus muris, 501 



Spirochetes and Bacteria, Relief Staining, 

 168 



— and Treponemata, Staining Films for, 



349 



— in Urine in Cases of Trench Fever, 635 

 Spirogyra, Sexuality, 483 



Spleen during Hibernation, 570 

 Splitting of Brass Condenser Tubes, 258 

 Sponge-spicules, Influence of Vibrations on 



Form, 592 

 Sponge, Animals associated with, 306 

 Sponges, Axinellid, 307 



— from Malaga, 472 



— Japanese Calcareous, 307 



— Lake Biwa, 307 



— Siliceous, Gelatinous Spicules in New- 



Genus, 130 



Spongospora, Origin, 242 



Si)ore Germination in Oiuigena equina, 

 324 



Spore Mother-cells of Catherinsea, 605 



Spores, Fungus, Vitality, 617 



Sporogonial Development in Mosses, Dura- 

 tion, 604 



Sporophores, Sandy, 411 



Sporozoa from Fislies, 596 



— from Glossohalanus minutus, 401 

 Sporozoon, N6w, 401 



Sporulation in Cultures of Botryogphieria 

 Berengeriaiia, 151 



Sprat, Copepod Parasite, 586 



Sprue, Etiology, Bacterial Researches, 625 



Sputim], Tuberculous, Treatment by 

 Pyridine, 255 



Stager, R., Stem-inhabiting Ants in 

 I Switzerland, .S85 



' Stain, Hpematoxylin, 167 

 I — Plasma, Biebricli Scarlet, 427 

 ' Staining and Fixing Toxoplasma, 257 



— and Preparation of Material for Mitosis, 



167 



— Films for Spirochsetes and Trepone- 



mata, 349 



— ]\[icroscopic Organisms, 597 

 with Copying-ink Pencil. 317 



— of iSpirochxia Icterohxmorrhagica, 256 



— I'rotozoa and Blood-corpuscles, Solu- 



tion for, 635 



— Relief, for Bacteria and Spirochaetes, 



168 



— A'^ital, of Malarial Parasites, 427 

 Stains derived from INIethylen-blue, 348 



— Microscopical, Distilled Water for, 426 

 Stapedial Plate, Development, 561 



