INDEX. 



1163 



I 



Nutrient Substances, Non-, Absorption 

 by the Plant of, 1032. 



Nutrition of Trees by means of Under- 

 ground Fungi, 844. 



Nutritive Properties of the Various 

 Portioiis of the Grain of Wheat, 671. 



Nyctitropic Movements of Leaves, 273. 



O. 



Obelia, Origin of Sexual Cells in, 250. 



" Obituary," 143. 



Objective, Griffith's Mechanical Finger, 

 709. 



, Supposed Increase of the Aper- 

 ture of, bv Using Highly Kefractive 

 Media, 1077. 



Objectives, An Improvement in, 705. 



and Oculars, Choice of, 1082. 



, Care and Use of, 708. 



, Gundlach's Improved, 863. 



, Magnifying Power of, and Posi- 

 tion of Woilaston Camera, 335. 



, Measurement of Power and Aper- 

 ture of, 1082. 



of Large Aperture, Cost of, 325. 



, Series of, 863. 



, Testing the Different Sectors of, 



324. 



, Universal Screw for, 335, 



Oblique Illuminators. 129, 130. 



Ocular. See Eye-piece. 



Ognew, J., 1111. 



Oidium, New Parasitii^, 505. 



Oil, Mineral, Composition of, in Rela- 

 tion to the Plants which have pro- 

 duced it, 276. 



Receptacles in the Fruit of Um- 



bellifera;, 89. 



OldfieM, W., 1081. 



Oldham, W. P., 533. 



Oleander, Development of Sclerenchy- 

 matous Fibres of, 478. 



Olivier, L., Method for Observing Pro- 

 toplasmic Continuity, 892. 



Oltmanns, F., Conducting Water in the 

 Stem of Mosses, 682. 



, Movement of Water in Mosses, 



493, 



Onion, Wild, Fertilization of, 1028. 



Onr>clca, Third Coat in the Spores of 

 the Genui-, 493. 



Oogenesis in JiranchiobdcUa, 643. 



Opaque Dry Objects, Muuntiiig witli- 

 out C(»ver-glaHs, 161. 



Objects, Dry Mounting oT, 560. 



Ophioglossacca), Structure and Classi- 

 fication of, 1031. 



Ophrydium versatile. Chemical Cora- 

 pohition of Z^iocytiuni of, 818. 



Ophryocystis liiitachlii, 82. 



OfKWBum, Development of, 976. 



Optic Ganglion of iEschna, 800. 



of Palinurus vulgaris, 450. 



Ord, W. M., On Erosion of the Sur- 

 face of Glass, when exposed to the 



Joint Action of Carbonate of Lime 



and Colloids, 381, 761. 

 "Orderic Vital," 891. 

 Oribatidfe, New British, 385. 

 Orley, L., Respiration of the Serpu- 



lacese in Relation to their Tegu- 



mentary Pigments, 64. 

 " Os," 533. 

 Osborn, H. F., Preparing Brain of 



Urodela, 536. 

 , Simple Method of Injecting the 



Arteries and Veins in Small 



Animals, 1093. 



, H. L., Gill in Neptunea, 226. 



and E. B. Wilson, Mimicry among 



Marine Mollusca, 79.t. 

 Osborne, J. A., Embryology of Botys 



hyalinalis, 447. 



, Lord S. G., 143. 



, , Diatomescope, 128. 



Osmunda, Apex of the Root in, 1033. 

 Osseous Tissue, Decalcification and 



Staining of, 905. 

 Osten-Sacken, C. R., Comparative 



Chfetotaxy, 52. 

 Osteomyelitis, Acute Infectious, Micro- 

 coccus in, 508. 

 cocci. Development of, in the 



Organism, 290. 

 Ostroumoff, A., Metamorphosis of 



Cyphonautes, 798. 

 Otocvst, Relations of, in Liraacina, 228. 

 Otto' J. G., 566. 

 Oudemans, A. C, Circulatory and 



Nephridial Apparatus of the 



Nemertea, 810. 

 Ova and Embryos of the Aphides, 



Treatment of, 147. 



, Formation of, in Pyrrhocoris, 798. 



, Frog's, Demonstrating Spindle - 



Bodies in Yolk of, 895. 

 , Influence of E.\ternal Conditions 



on the Development of, 423. 

 , Mammalian, Formation of 



Spindles in, during Degeneration 



of the Graafian Follicle, 975. 



, Meroblastic, Preparing, 340. 



of Bombyx, Composition of, 441. 



of Nepa cinerea and Nntonecta 



glanca, Developmental History and 



Mor|)hological Value of, 447. 

 , Pelagic Tcleosteau, Origin of the 



Hypoblast in, 214. 

 , Young, of Frogs, Spindle-shaped 



Bodies in the Yolk of, 213. 

 Ovary and Perianth, Relation of, in 

 the Development of Dicolylcduns, 

 1026. 



