920 



INDEX. 



Depth of Vision, 153. 



Dernialeichidce, Structure of, 186. 



Desiccation of Rotifers, 787. 



Destruction of Insects by Yeast, 378. 



of Microscopical Organisms in 



Potable Water, 585. 



Detlefisen, E., 74, 529. 



Detmer, W., 68, 222, 818. 



, Vegetable;,Physiology, 223. 



Deutzia, Stellate Hairs of, Preparing, 

 587. 



Developmental Process in Birds, Photo- 

 graphs of, 23. 



Diaphragm for Limiting the Apertures 

 of Objectives, 407. 



, Gundlach's Calotte, 859. 



Iris-, for varying the Aperture of 



Objectives, 262. 



, Pennock's Oblique, 270. 



Diaphragms, Use of, 441. 



Diatom Stage, Bulloch's, 554. 



Diatomaeeae, Schmidt's Atlas of, 249. 



Diatoms, Cleaning, 428. 



, Fineness of Striation as a Specific 



Character of, 247. 



from the Island of Lewis, 665. 



in Peruvian Guano, note on Eev. 



G. L. Mills' Paper on, 476. 



in Thin Rock Sections, 246. 



, Motion of, 391, 546, 838. 



, Mounting, Gum-juniper for, 142. 



of Thames Mud, 94. 



of the Baltic, 837. 



, Preparation of, 707, 887. 



Dicyemidse, Observations on, 621, 



Didymosphseria and Microthelia, 230. 



Differentiating Motor and Sensory 

 Nerves, 425. 



Diffusion of Bacteria, 658. 



Digestion, Intracellular, 602. 



of Amyloids in Cephalopoda, 30. 



Digestive Canal of Holothuria, His- 

 tology of, 792. 



Dimensions of Histological Elements, 

 762. 



Dimorpha mutans, 207. 



Dionsea, Leaf of, Electromotive Proper- 

 ties of, 533. 



Diphtheria, .^Etiology of, 87. 



Dippel, L., 261, 551, 854. 



Diptera, Larvae and Pupae of, 772. 



, of, Nervous System of, 



333. 



, Post-embryonic Development of, 



37. 



Direction of Growth, Influence of 

 External Forces on, 372. 



Dischidia Rafflesiana, Pitchers of, 651. 



Disdaplia, 768. 



Disease, Etiology of Tubercular, 385. 



, new Fungoid Cattle- (Aktino- 



mykosis), 236. 



Disease, Salmon, 538. 



Diseases, Connection of, with Specific 

 Bacilli, 89. 



of Plants, Frank's, 75. 



Dispersion of Seeds and Fruits, Mecha- 

 nical Contrivance for, 66. 



Dissecting, 880. 



Dissociation of Gland-Elements, 123. 



Distemper and Hay, Bacilli of, Con- 

 nection of, 657. 



, Bacteria of, Experimental Pro- 

 duction of, 832. 



— - , Etiology of, 831. 



Distribution and Cross-fertilization of 

 Seeds, 215. 



, Geographical, of Rhizopoda, 356. 



, Water-, in Plants, 373. 



Division and Structure of the Vege- 

 table Cell, 214. 



, Cell-, and Development of the 



Embryo of Isoetes lacustris, 375. 



of Closterium intermedium, 665. 



of Embryonic Cells in the Ver- 



tebrata, 478. 



of the Cell-nucleus in Spirogyra, 



543. 

 Doliolum, Alternation of Generations 



in, 331. 



, Natural History of, 768. 



Dowdeswell, G. F., The Bacteria of 



Davaine's Septicaemia, 310. 

 Drasche, R., 331. 

 Drawing Apparatus, Hartnack's, 402. 



Arrangement, Curtis' Camera 



Lucida, 262. 



, Methods for, 424. 



from the Microscope, 404. 



Objects, Apparatus for, 424. 



on Gelatine with the Camera 



Lucida, 262. 

 Drepanidium ranarum, Cell-parasite 



of Frog's Blood and Spleen, 



519. 

 Dressings, Parasitic Organisms of, 



384. 

 Dry and Immersion Objectives, Beck's 



Achromatic Condenser for, 270. 

 Mounting, Wax and Guttapercha 



in, 285. 



Mounts, Moisture in, 583. 



Preparations, Method for, 705. 



Duncan, P. M., 443. 



, The President's Address, 



145. 

 Dupetit, M., 834. 

 Du Plessis, G., 58. 

 Durable Preparations of Microscopical 



Organisms, 120. 

 Duramen, Formation of, Properties and 



Mode of, 525. 

 Dyes, Aniline, and Vegetable Tissues, 



281. 



