ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 911 



PuMPHREY, W.— The Application of Photography to the delineation of microscopic 

 objects. 

 [Brief directions for photographing microscopic objects, with drawing of a 

 camera.] 



Journ. Post. Micr. Soc, II. (1883) pp. 201-6 (1 fig.). 

 Rogers. W. A. — Studies in Metrology — First paper. 



[Contains a description and 7 figs, of the Rogers-Bond Universal Com- 

 parator, with two comparing Microscopes, Micrometers, ToUes's opaque 

 illuminator, &c.] 

 Sep. repr. from Proc. Amer. Acad. Arts ^ Sci., 1882-3, pp. 287-398 (7 figs.). 

 Slack, H. J. — Tubular Live-box. [Supra, p. 906.] 



Knowledge, IV. (1883) pp. 267-8 (1 fig.). 

 Sloan, J. — A good Objective. 



[Spencer's 1-lOth hom. imm. 125° B.A. resolves Amphipleura pellucida "with 

 daylight above or beneath the stage, with concave mirror alone, in homo- 

 geneous fluid or in glycerine. By lamplight and concave mirror with 

 bull's-eye condenser with either fluid. It also resolves them readily by 

 central sunlight."] 



Amer. Mon. Micr. Journ., IV. (1883) pp. 198. 

 Smith, J. Lawrence. — Obituary. 



[Inventor of the inverted Microscope.] 



Amer. Journ. Sci., XXVI. (1883) pp. 414-5. 

 Sternberg, G. M. — Photo-micrographs and how to make them. 204 pp. and 

 47 photo-mierographs (on 20 plates) reproduced by the heliotype process. 8vo, 

 Boston, 1883. [Ante, p. 720.] 



[Cf. Amer. Mon. Micr. Journ., IV. (1883) p. 197.] 

 Stowell, 0. H. — Gleanings from the Journal of the Royal Microscopical Society 

 . for August. The Microscope, III. (1883) p. 156. 



Stowell, C. H. and L. R. — A new State Microscopical Society. 



[Suggestion for a Michigan Society.] The Microscope, III. (1883) p. 160. 



&. Collecting, Mounting and Examining Objects, &c. 



Aylward's Apparatus for Pond-Life Hunting. — Mr. H. P. 



Aylward has designed a set of apparatus for pond-life hunting, the 

 novel feature of which is that the holder for tlie bottle is made 

 of steel wire, one end grasping the neck of the bottle, and the 

 other end being a hollow spiral, in which the taper end of any sized 

 walking-stick may be inserted. The hook is similarly attached to a 

 spiral. The dipping-bottle packs in a japanned cylindrical tin box, 

 the upper half of which is composed of very fine copper gauze. 

 When the bottle is emptied into this box, the organisms will be 

 retained in the lower part, and the surplus water escape through 

 the gauze. This operation may be repeated any number of times, 

 and the contents afterwards returned to the bottle. For special 

 gatherings, another japanned box is supplied, containing several 

 large test-tubes. The size of the cylindrical box and its case con- 

 taining the bottle is 5 in. X 2 in., that of the box with test-tubes, 

 51 in. X 3^ in. x 1 in. 



Capturing and Breeding Insects, Acari, &c., for Mounting.* — 

 Mr. A. D. Michael, referring to the question of breeding insects, 

 acari, &c., in order to get them in the best condition to mount, says that 



* Journ. Quek. Micr. Club, i. (1883) pp. 241-2. 



