INDEX. 



829 



Silvestri, F., A Most Primitive Insect, 



295 

 Simon, L., Notes on Development and 



Structure of Bradypus, 2-1 

 Simroth, H., Phylogenetic Speculations, 

 166 



— Recent Researches on Gastropods, 32 

 Sine'ty, R. de, Acrosome of Spermatid of 



Notonecta, 295 



— Development of Spermatid of Notonecta 



glauca, 295 



— "Nebenkern" and Nucleiu Movements 



in Spermatid of Notonecta glauca, 



296 

 Sinistral Snails, Breeding Experiments, 



603 

 Siphonere, New Genus of, 64 

 Sipkonophora, Flagellate Parasites, 306 

 Sipunculids, Distribution and Affinities, 



612 



— Notes, 613 



Skeats, A, Chemical Composition of Lime- 

 stones, Microscopical Methods, 681 

 Skin, Frog's, Permeability, 30 



— of Trematodes, 500 



Skinner, S. A., Tide-Pool Vegetation, 639 

 Skottsberg, C, Mycrocystis pyrifer, 329 

 Skrobansky, K. v.. Yolk-Nucleus or Cor- 

 pus Balbiani in Vertebrates, 485 

 Slade, H. B., Hydrocyanic Acid in Sorghum. 



517 

 Sleeping Sickness, Etiology, 344 



■ Trypanosoma found in, 504 



Slide for Pond Life, 239 

 Slugs, Locomotion, 490 

 Smell, Sense of in Snails, 290 

 Smith, A., Lincolnshire Diatoms, 526 

 Smith, A. L., Sclerotinia Fucheliana, 208 

 Smith, B., Notes on Species of Fulgur, 32 

 Smith, H. G., Leaf- Venation and Chemical 



Constituents of Eucalypts, 50 

 Smith, R. G., New Gum Bacterium, 77 

 Smith, W., Myrmecophily in Macaranga 



triloba, 625 

 Smith, W. G., Agaricus Henrietta}, 532 

 Smith, W. H., Method for Staining Spu- 

 tum for Bacteriological Examination, 

 372, 772 

 Snails, Sense of Smell, 290 

 Snake Venoms, 30 



Snakes, Anomalies in Head-Shields, 166 

 Snow, L. M., Insects of the Drift Line, 33 

 Soar, C. D., Exhibition of Drawings of 

 British Freshwater Mites, 781 



— Living Hydrachnid Larvae in Trout's 



Stomach, 609 

 Soil, Effect of Composition on Plants, 190 

 Solenogastres, New, 717 

 Solger, B., " Intracellular Threads " in 



Ganglion-Cells of Electric Organ of 



Torpedo, 162 



— New Freezing Plate for Hand Micro- 



tome, 558 



Dec. 16th, 1903 



Sollas, W. J., Method for the Investiga- 

 tion of Fossils by Serial Sections, 

 775 



— and I. B. J., Palreospondylus, 714 

 Soluble Glass as Mounting Medium for 



Examination of Paper, 774 

 Sorbus Aucuparia, Disease, 335 

 Sorghum, Hydrocyanic Acid, 517 

 Sosnowski, J., Physiological Study of 



Metamorphosis, 172 

 Soulier, A., Revision ot Annelids of the 



Cette Region, 498 

 Sparrow, Spermatogenesis, 23 

 Specific Gravity of tell-Sap, 186 

 Spelerjxs longicaudus, Development of 



Musculature and Skeleton, 595 

 Speller, F. N., New Etching Reagent for 



Polished Steel Sections, 6S2 

 Spermatid of Notonecta, Acrosome. 295 



— of Notonecta glauca, Development, 



295 

 "Nebenkern'' and Nuclein Move- 

 ments, 296 

 Spermatogenesis and Oogenesis in Sagitta 



bipunctata, 498 

 of Cyclops strenuus, Maturation Phe- 

 nomena. 39 



— in Cephalopods, 717 



— in Oybider roiselii, 36 



— in Drones, 719 



— in Hydra and Aurelia, 304 



— in Phalangista vulpina, 24 



— in Sparrow, 23 



— of Looustidse, 37 



Spermatozoa, Dimorphic, in Butterflies, 

 605 



— Dimorphism, 23 



— of Acanthias vulgaris, 593 

 Spermatozoids, Development in March- 



antia, 741 

 Sphacelariese, Australasian, 67 

 Sphxocarpus terredris, 522 

 Sphseropsideod, New, 69 

 Sphagna and Hepatics, German, 322 



— of Upper Teesdale, 523 

 Sphagnum, Leaf-cells, 197 



Spherulin, Distribution among Plant 



Families, 309 

 Spiders, Copulation, 609 



— German, Monograph, 38 



— of Germany, 497 



Spiess, G, Alimentary Tract of the Leech, 

 302 



— Minute Structure of the Alimentary 



Canal of the Leech, 612 

 Spindle Formation, Studies, 731 



— Residues in Cell-Division, 162 

 Spine, Curvature in Fishes, 161 

 Spinelli, V., Marine Algae of Sicily, 638 

 Spinthariscope, 563 



Spiral Arrangement in Floridea?, 66 

 Spirillum, Sarcina, and Streptococcus, 

 Observations. 540 



3 H 



