ZOOLOGY AND BOTANY, MICKOSCOPYj ETC. 301 



Engelthann, T. W. — Das Mikrospectral-photometer, ein Apparat zurquantitativea 

 Mikrospectralanalyse. (Tlie microspectral photometer, an apparatus for 

 quantitative microspectral analysis.) IFost.'] Bot. Ztg., XLII. (1884) pp. 81-8. 

 Fawcett, J. E. — Photomicrography, 



[An ordinary camera can be used.] Micr. News, IV. (1884) pp. 52-3. 



Feussnee, K. — Ueber die Prismen zur Polarisation des Lichtes. (On prisms for 

 the polarization of light.) \_Post.'] 



Zeitsciir. f. Instrwmentenk., IV. (1884) pp. 41-50 (8 figs). 



Nature, XXIX. (1884) pp. 514-7 (8 figs.). 



Flesch, M. — Ueber einen heizbaren, zu schnellem Wechsel der Temperatur 



geeigneten Objecttisch. (On a hot stage for a rapid change of temperature.) 



iFosf] Zeitsch. f. Wiss. Mikr., I. (1884) pp. 33-8 (1 fig.). 



Feancotte, p. — Description d'une Chambre-claire. (Description of a camera 



lucida.) [_Post.'] 



Bull. Soc. Belg. Micr., X. (1884) pp. 77-9. 

 Gauss on the Object-glass. See Mellor, T. K. 



GiLTAY, E. — Theorie der Wirkung und des Gebrauches der Camera Lucida. 

 (Theory of the action and use of the camera lucida.) [^Post.'] 



Zeitschr.f. Wiss. Mikr. (1884) pp. 1-23 (10 figs.). 

 Getjnow, J. — The Abbe Illuminator. 



[Instructions for usiug this illuminator as constructed by him.] 



Amer. Mon. Micr. Joiirn., V. (1884) pp. 22-3. 

 Hebrick, S. B. — The Wonders of Plant Life under the Microscope. 248 pp. and 



85 figs, 16mo, New York, 1883. 

 Hitchcock, E. — The Standard Micrometer of the American Society of Micro- 

 scopists. [Of. supra, p. 287.] Amer. Mon. Micr. Journ., V. (1884) pp. 34-5. 



„ „ " Our Advertisers." 



[Brief notices of various American opticians.] 



Amer. Mon. Micr. Journ., V. (1884) pp. 56-7. 

 „ „ Giant Electric Microscope. 



[Notes as to the absence of novelty and the unsteadiness of the light.] 



Amer. Mon. Micr. Journ., V. (1884) p. 57, 

 HuED (F.) Portable Microscope. 



[Statement only of "a design which he believes will prove satisfactory," 

 packing 5 X 2^ x If in.] 



Amer. Mon. Micr. Journ., V. (1884) pp. 37-8. 

 Journal of the Eoyal Microscopical Society, Vol. III. 



[Review.] Journ. of Science, VI. (1884) pp. 106-7. 



JuLiEN, A. — Immersion Apparatus. 



[Title only of paper read at meeting of Society of Naturalists of the Eastern 

 United States.] 



Amer. Nat., XVIIL (1884) p. 224. 

 Kaeop, G. C. — Table for Microscopical Purposes. 



[Soft white wood, 2 ft. 9 in. long, 1 ft. 6 in. wide, and 2 ft. 3 in. high. No 

 cross-bar to the legs in front. Top 1 in. thick, " so that at any time it 

 may be planed afresh if discoloured or eroded by acids." On each side 

 in front is a sliding board to serve as an arm-rest, 6 in. wide and 15 in. 

 apart. A piece of plate glass 7 in. x 6 in. let in the top over a piece of 

 white paper or card. Half the glass blackened behind, and on the card 

 opposite the other half is marked a 3 x 1 space, with centering lines, 

 microscopical measurements, magnifying powers, &c.] 



Journ. Qaek. Micr. Club, I. (1884) pp. 312-3 (1 fig.). 

 KiTTON, F. — Drawing with the Microscope. 



[Objects to E. Holmes' suggestion of placing the slide cover downwards 

 (ante, p. 146) tliat " the upper and under surfaces of an object are not as 

 a rule alike ; a further objection is that all powers exceeding 4/10 could 

 not work through an oidinary slide." Gives the Wollaston camera the 

 preference over all others tried.] 



Sci.-Gossip, 1884, pp. 41. 



Knauee, F.— Das Mikroskop und seine Anwendung. (The Microscope and 



its use. Naturhistoriker, V. (1883) pp. 525-7 (concl.). 



