596 SUMMARY OF CUERENT RESEARCHES RELATING TO 



Stowell, C. H. — Microscopy iu the University of Michigan. 



[Description of the nature and extent of the microscopical work iu tiie 

 University.] 



The Microscope, III. (1883) pp. 63-8. 

 „ „ and L. E. — [Suggestions for early publication of the proceedings 



of the American Society of Microscopists.] The Microscope, III. (1883) p. 69. 

 Thomas, C. — A new form of " Life-slide " (" Thomas's Vivarium"). 



[See Vol. II. (1882) p. 688.] Trans. Essex Field Club, III., pp. xlix.-l. (2 figs.). 

 Van Hfa'rck, H. — La Lumiere e'lectrique appliquee aux recherches de la Micro- 

 graphie. (The electric light applied to microscopical researches.) 



[I. Production of Electricity (Me'ritens' and Reynier's Dynamos; Tommasi 

 and Reynier's Batteries.) II. Storage (Kabath's and Tommasi's Accu- 

 mulators.) III. Lamps (Rcynier, Swan, and Stearn.) IV. Illumination 

 of tlie Microscope (Steam's method, ante, p. 29.) V. Photo-micrography. 

 Additional Note (Reynier's new Accumulntors).] 



Journ. de Microgr., VII. (1883) pp. 244-60 (13 figs.). 

 Watson's New Microscope-stand. [Supra, p. 55.5.] Micr. News, III. (1883) p. 205. 

 Weight, L. — Optical Combinations of Crystalline Films. 



[Describes easily-made combinations of mica-films put together with 

 Canada balsam dissolved in benzol. Contains also a reference to an appa- 

 ratus made by Swift and Son by which all the preparations and crystals 

 requiring highly convergent light can be shown on the stage of any 

 Microscope provided with a draw-tube.] 



Proc. Phys. Soc. Loud., V. (1883) pp. 186-95 (1 pi.). 

 Zeiss, C. — On the method of using Abbe's test-plate. 



[The directions issued by Dr. Zeiss with the test-plates and printed ante., 

 p. 281.] 



Journ. Quek. Micr. Club, I. (1883) pp. 154-6. 

 „ „ Dissecting Microscope. 



[Exhibition and discussion ; also on Stephenson's Binocular.] 



Journ. Qnek. Micr. Club, I. (1883) pp. 200-1. 

 Zenger, K. W. — Berechnung des Endomersions-Objectives fiir Fernrohr- und 

 Mikroskopobjective. (Computation of the Endomersion Objective for 

 Telescope and Microscope Objectives.) [Post."] 



SB. K. Bohm. Gescll. Wiss. Prag, 1881 (1882) pp. 467-79. 

 „ „ Dioptrische Studien. (Dioptric Studies.) 



[On " Endomersion objectives." Post.'] 



SB. K. Bohm. Gesell. Wiss. Prag, pp. 479-92. 



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



Water Collecting-Apparatus.* — Mr. C. F. George has used the 

 following in searching for HydrachnidaB, and has found no other piece 

 of apparatus so efficient : — 



A piece of thick brass wire (fig. 117), is bent at about 6 in. from 

 one end into a ring 4 or 5 in. in diameter. After connecting with 

 some finer wire the two extremities of the ring, bend the stout wire at 

 right angles to the ring, and continue it for about 4 in. Then 

 make another ring about \\ in. in diameter, and there terminate 

 the wire, leaving the small ring, however, not quite complete. The 

 two rings will thus be parallel to each other. On the upper ring 

 stitch a piece of tape, and to this sew a piece of muslin, made to the 

 shape of a conical bag, and having its wider end affixed to the tape. 

 Into the lower opening of this bag a small, wide-mouthed glass 

 bottle, of about two ounces capacity, should be fastened by a piece of 

 thread or fine string, and the lower ring is then sprung round the 

 neck of the bottle. The other end of the brass wire, which was left 

 * Journ. Post. Micr. Soc, i. (1882) pp. 158-9 (1 fig.). 



