ZOOLOGY AND BOTANY, MICROSCOPY. ETC. 629 



O R T H, J. — Cnrsus der normalen Histologie zur Einfiihrung in dem Gebrauch des 



Mikroskopes, sowie in das pracktische Studium der Gewebelekre. (Course of 



iiorn:.iil histology as an introductioQ to the use of the Microscope as well as 



to the practical study of histology.) 



[Contains an introduction on the Microscope, and methods of preparation, 



pp. 1-65, 11 figs.] 



4th ed., xii. and 360 pp., 108 figs. (8vo, Berlin, 1886). 

 P., W. G. — The Huyghenian Eye-piece. 



[The answer to the question, " Is it achromatic? " requires a distinction to 

 be made before we can give it. When it receives parallel rays it is 

 achromatic ; but wlien placed as it is in a telescope it is very tar from 

 being so.] 



Engl. Mech., XLIII. (1886) p. 255. 

 Pelletan, J. — Microscope Kineralogiqne (moyen modele) de Be'zu, Hausser et 

 Cie. (Be'zu, Hausser, & Co.'s Mineralogical Microscope — medium size.) 



Juurn. de Microgr., X. (1886) pp. 185-6. 

 Feyer, A. — An Atlas of Clinical Microscopy. Translated by A. C. Girard. 



200 pp., 90 pis., and 105 figs. (8vo, New York, 1886). 

 Rogers, W. A. — Determination of the absolute length of eight Bowland 

 gratings at 62° F. 



[Contains a description of a new comparator made in 1884.] 



Froc. Amer. Soc. Micr., 8th Ann. Meeting, 1885, pp. 151-98 (3 figs.). 

 „ „ Baled plate for Blood-corpuscles. [Supra, p. 520.] 



nth Ann. Rep. Amer. Post. Micr. CM, 1886, p. 13. 

 RoYSTON-PiGOTT, G. W. — Microscopical Advancos. 



[VII. " A thing of beauty, a joy for ever." Diatomic marvels. VIII., IX., 

 X. Focal planes, their measurement by the focimeter and diatomic 

 images.] 



Engl. Mech., XLIII. (1886) pp. 115-6 (2 figs.), 159-60 (1 fig.), 

 203-4 (3 figs.), and 247-8 (5 figs.). 

 Also reply to Dr. Edmunds, aide p. 337, p. 126. 

 E UN YON, E. W. — [Exhibition of Oxy-hydrogen Microscope.] 



[Construction only generally described — "The nose-piece to which the 

 objectives are attached slides on three polished steel rods, as does also 

 the stage with its substage, and both can be clamped in any desired 

 position."] 



Froc. San Francisco Micr. Soc, 1886, March 24th. 

 ScHiEFFERDECKER, P. — Ueber eine neue Construction der Mikrometer- 

 schraube bei Mikroskopen. (On a new construction of the micrometer screw 

 for Microscopes.) IPost.'] 



Zeitschr.f. Wiss. Mikr., III. (1886) pp. 1-5 (2 figs.). 

 ScHULTZE, E. A. — Electrical illumination for the Microscope. 



[Reports the successful use for the purpose of a small gas engine and 

 dynamo.] 



Journ. New York Micr. Soc, II. (1886) pp. 16-7. 

 Shanks, S. G. — A Contribution to Blood Measurements. 



[Description of the Microscope used and mode of measurement, with table 

 of 242 measurements. " A blood-corpuscle seen with the vertical illumi- 

 nator presents a novel appearance. It appears smaller than with trans- 

 mitted light, that is, without coma."] 



Amer. Mon. Micr. Journ., VII. (1886) pp. 25-6. 

 Smith, H. L. — Presidential Address. 



[The unconscious influence of science studies. See Vol. V. (1885) p. 1081.J 

 Froc. Amer. Soc. Micr., 8th Ann. Meeting, 1885, pp. 5-28. 

 „ „ Device for testing refractive index of immersion fluids. 



[See Vol. V. (1885) p. 1066.] 



Ibid., pp. 83-5 (1 fig.). 

 SoRBT, H. C. — The application of very high powers to the study of the micro- 

 scopical structure of steel. ISujyra, p. 511.] Ironmonger, 1886, pp. 905-6. 



Nature, XXXIV. (1886) p. 63. 



