10G8 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Pfeifer's (A.) Embryograph for use with Zeiss Microscopes. [Post."] 



Stud. Biol. Laborat. Johns Hopkins Univ., III. (188G) pp. 480-1 (1 fig.). 

 Photography, advance of Pathological. 



["In an editorial on the 'Advance of Pathological Fhotography,' the 

 ' British Medical Journal ' says that a perfect system of representing patho- 

 logical specimens, as seen under the Microscope, by photography, is much 

 to bo desired, and it seems that such a system will very shortly be 

 perfected."] 



T/ie Microscope, VI. (188G) pp. 201-2, from Brit. Med. Journ. 

 Power of a Microscope. 



[" The magnifying power of n Microscope centres in the lens," &c. !] 



Scientif. Enquirer, I. (1886) pp. 100-1. 

 Proctor, It. A. — Minute Writing. 



[As to minute writing of the Lord's Prayer. The ' Newcastle Weekly 

 Chronicle' says that Mr. Proctor lias sent three specimens of his skill in 

 microscopic writing. " One of them is the Lord's Prayer written in less 

 than a half-ring marked by a penholder smaller than an ordinary pencil- 

 ring. Another is the same prayer occupying a space slightly over the half- 

 ring. A few touches of the pen have given the latter specimen the ap- 

 pearance of the sun rising out of the sea. The third specimen is in some 

 respects the most striking and curious of the three. It is the Lord's Prayer 

 written three times over on three straight lines a shade over 2£ in. long. 

 The writing in this case is so straight and minute that the three lines 

 look to the naked eye like three ruled lines. And yet, when placed 

 under a magnifying glass, every word is seen to be perfectly distinct."] 



Knowledge, IX. (1886) p. 361. 

 Queen's (J. W.) Acme Lamp-stand. [Supra, p. 1054.] 



Micr. Bulletin (Queen's), III. (1886) p. 35 (1 fig.). 

 Robin (C), Sa Vie et son (Euvre. (Life and work of Prof. C. Robin, Hon 

 F.R.M.S.) (In part.) 



Journ. de I'Awt. et de la Physiol., XXII. (1886) pp. i.-xlviii. (portrait). 

 Royston-Pigott, G. W. — Microscopical Advances. XIII. , XIV. 



[Minute Coloured Imagery. — First Order of Interstitial Colouring. Second 

 Order : Transmitted Colours. Solar Spectra emitted by small lenses. 

 On the circular solar spectrum.] 



Engl. Mech., XLIV. (1886) pp. 165-6 (2 figs.), 207-8. 

 Schroder, H. — Ahrens' neues Polarisationsprisma. (Ahrens' new polarizing 

 prism.) [Post.'] Zeitschr.f. Instrumentenk., VI. (1886) pp. 310-1 



Schultze, E. A. — Five species of Triceratium. 



[Two artotype plates with 8 figs., from photo-micrographs with Wale's 

 1/12 in. and Spencer 1/16 in.] 



Journ. New Fork Micr. Soc, II. (1S86) p. 110 (2 pis.). 

 Schtjlze, A. — The new Apochromatic Micro-objectives and Compensating 

 Oculars of Carl Zeiss in Jena. 



[Cf. this Journal, ante, pp. 316 and 849.] 



Engl. Mech., XLIV. (1886) pp. 126-7, 155. 

 Scribner, F. L. — Method of making Drawings of minute portions of Plants. 

 [The apparatus used consists of a Zentmayer dissecting Microscope, with 

 the metal base replaced by a wooden one, which slides in a frame 

 hinged to a heavy base-board. When in use, the frame is placed 

 vertically and the focal distance adjusted as desired. A Wollaston 

 camera and an adapter for lenses are attached; drawings are made on 

 tracing paper and transferred by means of a steel point to Bristol board. 

 The final lines are inked with Keuffel and Esser's pen No. 1459.] 



Bull. Torrey Bot. Club, XIII. (1886) p. 170. 

 Sonnet — The Microscope. 



[" But here, in thee, frail instrument, we hold, 

 A more than fairy-fashioned key of gold, 

 That opes the boundless world Infinity ; 



And helps us trace, from its recondite source, 

 The first lace weavings of Life's dawning Now, 

 Down thro' its swiftly circling, onward course, 

 Till Man appears, with thought-enshrouded brow ; " &c, &c.] 



The Microscope, VI. (1880) p. 198. 



