148 SUMMAKY OF CURRENT RESEARCHES RELATING TO 



mences at the rate of 3,616,791 letters to the square inch and extends 

 to 212,746,216 letters, or at the rate of more than fifty-nine Bibles 

 "written in a square inch), has added a further novelty to the series, 

 being a photograph and a writing of the Lord's Prayer side by side 

 on the same slide, the former being photographed on the slide and 

 the latter engraved on the cover-glass. 



We observe that at a recent meeting of the Microscopical and 

 Natural History Section of the Manchester Literary and Philosophical 

 Society,* a member stated, " Mr. Webb died about ten or fifteen years 

 ago, but I cannot give the exact date." Mr. Webb is, however, still 

 alive, and as will be seen from the above, still engaged in microscopic 

 writing. 



Leeuwenhoek Medal. — The Gold Medal established by the 

 Royal Dutch Academy in memory of Leeuwenhoek, was last year 

 awarded to Prof. Ferdinand Cohn, as the histologist who in the last 

 decade had most distinguished himself in the study of microscopical 

 beings.f 



Allison, F. B. — Microscopical Binoculars. 



[Explains Mr. Nelson's difficulty as to the want of stereoscopic effect in the 

 case of objects lying " vertical," by the diminished difference of perspective. 

 Cf. this journal, V. (1885) p. 1076.] 



Engl.-Mech., XLII. (1885) p. 262. 

 American Society of Microscopists. 



[Keport of Cleveland Meeting (by Dr. S. M. Mosgrove). — Also of the 

 Working Session (by Dr. W. P. Manton). — Personal Notes on Cleveland 

 (Editorial). — Mr. Griffith's latest (by Dr. F. L. James, from the ' National 

 Druggist ').] 



The Microscope, V. (1885) pp. 193-203, 203-204, 207-210, 232-233. 



B., C. K. — A Cheap Dissecting Microscope. [^PostJ] 



Bat Gazette, X. (1885) pp. 427-8. 

 Beck's New " Star " Microscope. [Cf. Vol. V. (1885) p. 512.] 



Amer. Hon. Micr. Journ., VI. (1885) p. 229 (1 fig.). 



Behrens, W. J. — Enles for the TJse of the Microscope. 



[As to " keeping the metallic part clean." Focus up with high powers. 

 Microscope, if it is to be for a long time out of use, should be put away in 

 some closely shutting cupboard in which is placed some chlorate of lime.] 



Micr. Bulletin (Queen's), II. (1885) p. 41, 

 from The Microscope in Botany (Transl. of the original German work). 



Big NELL, G. 0. — Photo-micrography. [Post.'] 



Tear-Book of Photography, 1886, p. 95. 



Bienbaum, K., and J. Grimm. — Atlas von Photographien Mikroskopischen 



Praparate der reinen xmd gefalschten Nahrungsmittel. Abtheilg. I. ; Atlas zur 



Mehlpriifung. (Atlas of Photographs of Microscopic Preparations of pure 



and adulterated Foods. Part I. Flour testing.) 



16 pp. and 16 phot, plates, fol., Stuttgart, 1886. 

 BosTwiCK, A. E. — A new form of Absorption Cell. [Supra, p. 140.] 



Amer. Journ. Sci., XXX. (188.5) p. 452. 



* Chem. News, liii. (1886) pp. 34-5. 



t Cf. Versl. en Med. K. Akad. Wet. (Amsterdam), ii. (1885) pp. 105-10 

 (Address of Prof. Stokvis to Prof. Cohn), and pp, 111-4 (Keply of Prof. Cohn). 

 Also pp. 88-90. 



