INDEX. 



987 



Deformities, Crustacean, 599. 



Delineating Power of Objectives and 

 Aperture, 347, 356. 



Delogne's Belgian Diatoms, 648. 



Density of the Medium, Increase of 

 Aperture ^^'itll the Increase of, 308. 



Descriptions of New Microscopes, 932. 



Desiccation, Eevival of Tardigrades 

 after, 732. 



Desmidiese, New Zealand, 647. 



Desmids and Confervse, Preserving, 

 530. 



, Mounting, 537. 



, Norwegian, 102. 



Detecting Adulterations in Flour by 

 the Microscope, Mode of, 962. 



Detonating Organ of Bracbinus crepi- 

 tans, 441. 



Devonian Insects, Relation of, to Later 

 and Existing Types, 236, 730. 



Dew, Infusoria in, 617. 



Diagonal Kack-work and Spiral Pinion, 

 518. 



Diagram Fallacy (Tiie Stokes Immer- 

 sion and the Shadbolt Dry Ob- 

 jectives), 333. 



Diaphragm for Oblique Illumination, 

 Mayall's Spiral, 126. 



, Smith's V-shaped, 665. 



Diaphragm-plate, Bousfield's Rotating, 

 523. 



Diaphragms for Axial Condensers, 947. 



, Sliding Stage, 520. 



■ , Tighlixiann's Cylinder-, for the 



Vertical Illuminator, 941. 



Diastoporidse, Fossil, 882. 



Diatomacese, Arctic, 506. 



Belgian, Van Heurck's Synopsis 



of, 648. 



, Schmidts Atlas of, 648. 



, Stiia3 of, 787. 



, Tubes for conveying by Post, 145. 



Diatoms, &c., Arranging, 141. 



as Test Objects, 543. 



, Belgian, Delogne's, 648. 



, Cleaning, 837. 



■ , Fossil, 931. 



from Peruvian Guano, 865. 



in thin Rock Sections, 507. 



, Lenticular Areolations of, 555. 



, Motion of, 649. 



, Mounting in Substances of High 



Refractive Index, 704, 973, 978. 



, Movements and Vegetative Re- 

 production of, 509. 



, Movements of, 102. 



, New, 931, 



of the London Clay, 381. 



, Periodical and Massive Appear- 

 ance of, 931. 



, &oar) for Preparing and Cleaning, 



531. 



Diatoms, Uses of, 785. 



, of the Study of, 512. 



Dibranchiate Cephalopoda, Digestive 



Organs of, 433. 

 Diffraction Spectra, Apparatus for Ex- 

 amining, 822. 

 Diffusive and Absorptive Power of 



Leaves, 270. 

 Digestive, Nervous, and Reproductive 



Organs of Onchidium, 230. 

 Organs of the Dibranchiate 



Cephalopoda, 433. 

 Dimorphism, Sexual, in Echinoderms, 



51. 

 Dioptrical Formula, New, 745. 

 Diphtheria, Bacteria in, 779. 

 Diptera, Head and Mouth Organs of, 



236. 

 , Histolysis of the Muscles of the 



Larva of, during Postembryonic 



Development, 445. 

 Discomedusa3, 609. 

 , •Shortened Development in, 



896. 

 Discomycetes, Nomenclature of, 925. 

 Discrimination of Species, 227. 

 Disease, Chestnut-, 282. 



, Septoria Castanese, 777. 



, Microscopical Examination of 



Blood in the Diagnosis of, 542. 

 , New, due to the Action of the 



Saliva of a Child who died from 



Hydrophobia, 286. 



, of Birds, 926. 



Diseases caused by Fungi, 282. 



, Fungoid, of Animals, 492. 



of Plants, 273. 



of the Teeth, Fungi of, 927. 



to which Protozoa Parasitic in 



Man give rise, 760. 

 Disk Illuminator, Wenham's, 664. 

 Distichopora, Australian, 470. 

 Distomum clavatum. Anatomy of, 604. 



of the Crayfish, 893. 



Division of Closterium intermedium, 



648. 

 Doliolum, Development of, 879. 

 Dorsal Blood-vessel of some Ephemerid 



Larvae, 37. 

 Vessel of Chironomus, Develop- 

 ment of, 35. 

 Double and Treble Staining, 528. 

 Stain, Blue and Scarlet, for Nerve 



and many other Animal Tissues, 573. 

 Draw-tubes, Adaptation of " Society " 



screw to, 118. 

 "Dry" and "Immersion" Objectives, 



305. 

 Dry Mounting, 706. 

 Opaque Objects, Wax for, 



536. 

 Mounts for the Microscope, 138. 



