1080 SUMMARY OF CUEEENT EESEAEOHES RELATING TO 



Heueck, H. Van. — le Microscope a I'Exposition TJniverselle d'Anvers. (The 

 Microscope at the Ant-werp Universal Exhibition. In part.') 



Journ. de Microgr., IX. (1885) pp. 364-75 (6 figs.). 

 Hirst, G. D. — [Dr. Morris's theory as to highly refractive mounting media.] 

 [Siipra, p. 1078.] 



Journ. and Proc. Royal Soc. N. S. Wales, XVII. (1884) p. 179, 

 [Hitchcock, E.] — Postal Club Boxes. 



[Contents of Box F.] Amer. Mon. Micr. Journ., VI. (18S5) pp. 199-200. 



Hogg, J. — The Microscope; its history, construction, and application. 

 [New title-page only.] 



11th ed., XX. and 770 pp., 8 pis. and 356 figs., 8vo, London, 1885. 

 Hyde, H. G. — The Electric Light in Microscopy. 



[Exhibition of lamps of 1 and 3 candle power. He "agreed with the 

 conclusions amved at by other observers, that while the light itself is 

 eminently adapted to microscopical purposes, its general adoption will 

 have to be deferred until marked improvements are made at the battery 

 end. He doubted whether any of the fluid batteries could be modified so 

 as to answer the purpose, and was disposed to think tljat in some form of 

 storage battery the necessary qualities would ultimately be found. To 

 that end he was experimenting." ] 



Proc. San Francisco Micr. Soc, 1885, August 26th. 

 Inostranzeff. — [Double Microscope for non-transparent Minerals.] 



ISupra, p. 1058.] Illus. Sci. Montlily, IV. (1885) p. 27. 



Jadanza, N. — Zur Theorie der Fernrohre. Ueber die zusammengesetzten diop- 

 trischen Systeme. (Theory of the Telescope. On compound dioptric systems.) 

 Centr.-Ztg. f. Optik u. Mech., VI. (1885) pp. 193-5, 205-8 (2 figs.). 

 Transl. from Atti R. Accad. Sci. Tor., XIX. (1883). 

 [Jaubert, L.] — Les Instruments de I'Observatoire Populaire. (The Instru- 

 ments of the ' Popular Observatory. ') 



[Microscopes jsosf.] Les Sciences, I. (1883) pp. 53-7 (4 figs.). 



Cf. also pp. 9 and 11, 31, 46, 62-3, 78, 109. 

 Jolt, J. — The Meldometer. 



ISupra, p. 1068.] Nature, XXXIII. (1885) pp. 15-6, 



Lankester, E. — Half Hours with the Microscope. A popular guide to the use 

 of the Microscope as a means of amusement and instruction. 

 [New title-page only.] 



16th ed., XX. and 130 pp. (30 figs, and 9 pis.), 8vo, London, n.d. 

 Leckenby's (A. B.) Microscope Pencil-case. [(Siyjra, p. 1065.] 



Amer. Mon. Micr. Journ., VI, (1885) p. 200. 

 Lewis, E. T. — New Gauge for Wires or Plates. 



[Trotter's Patent.] Journ. Quek. Micr. Club, II. (1885) pp. 203-4. 



MoLLER, J. — Eeichert's Condenser. [Vol. IV. p. 437.] 



Zeitschr. f. Wiss. Mikr., II. (1885) pp. 339-40 (1 fig.). 

 Morris, W. — [New Fluid for homogeneous objectives.] 



[Oil of resin, used pure or thinned with oil of cedar.] 



Journ. and Proc. Royal Soc. N. S. Wales, XVIII. (1884) p. 177. 

 „ „ New Mounting Medium. {Supra, p. 1077.] Ibid., pp. 178-9. 



Nelson, E. M — Microscopical. 



[1. Eeply to F. D'Agen (ante, p. 888) as to the effect of bubbles at the back 

 of an objective. 2. As to the resolution of A.pellucida (96,000 striae per 

 inch in Smith's medium 2-4) with a Powell dry 1/12 in. of N.A. 0'94. 

 " Of course it had to be coaxed by using sunlight, heliostat, and a suitable 

 condenser." 3. "With regard to the Abbe theory (theoretical limit of 

 resolving power of objectives as tabulated on cover of E.M.S. Journal), 

 I find it in practice absolutely correct. I also believe the law on which 

 it depends is as certainly proved as is tlie law of gravitation." 4. Cor- 

 recting three slips in F. Grant's communication.] 



Ungl. Mech., XLII. (1885) p. 100 (2 figs.). 

 „ „ Podura Scale. 



[Criticism of a suggestion for placing a diaphragm above the condenser 

 instead of, as is iireferalde, below.] Engl. Mech., XLII. (1885) p. 202. 



