SUMMARY OF CURRENT RESEARCHES RELATING TO 



in the hands of scientific workers, but the path is toilsome and the 

 goal distant. There is reason in this devotion. When we know the 

 very little, how it lives and moves, and what it can do, we shall be 

 much more ready to comprehend how similarly minute elements com- 

 bined work in larger organisms." 



A GEN, F. D'. — Microscopical. 



[As to air-bubbles in the back combinations of objectives.- Also as to the 

 resolution of A. pellucida by a dry 1/5 in..of 135°. (Cf. ante, p. 726.)] 



Engl Mech., XLII. (1885) p. 37. 

 American Association for the Advancement of Science. 



[Remarks on the abolition of the Section of Histology and Microscopy. 

 " This anomalous Section finding its end near, proceeded with dignity to 

 request the Association to kill it : the request has been granted." " This 

 change has been urged for some time by those who do not think a special 

 ecience of Microscopy exists, but that the Microscope is a tool used by 

 scientific men in various branches." " It is to be hoped that Dr. Minot's 

 suggestion of forming a Microscopical Club within the Association will 

 be carried out, to insure the cultivation of technique among the members 

 intGrGsiiGd. "T 



The Microscope, V. (1885) pp. 181-2. 

 See also Amer. Man. Micr. Journ., VI. (1885) p. 175. 

 American Society of Microscopists. — Our Eighth Annual Meeting. 



[Urging that papers, speeches, and sessions should be short. " We must 

 insist upon being relieved and upon relieving our fellow-suiferers from 

 the lengthy uninteresting papers read by parties wlio have become 

 monomaniacs on their pet subjects."] 



The Microscope, V. (1885) pp. 180 and 181. 

 See also A7ner. Mon. Micr. Journ., VI. (1885) p. 157, 

 and Micr. Bulletin (Queen's), II. (1885) p. 25. 

 J, „ „ Eeport of Cleveland Meeting, (/w part.) 



Amer. Mon. Micr. Journ., VI. (1885) pp. 165-7, 175. 

 Amtot, T. E.— Direct Vision Microscopes. [Post.'] 



Sci.- Gossip, 1885, pp. 201-2 (1 fig.). 

 Aesonval, D'. — Simplification des Appareils a projection. (Simplification of 

 projection apparatus.) ISupra, p. 866.] 



Journ. Soc. Scientifiques, I. (1885) p. 140. 

 (Soc. de Biologie, 21st March.) 

 Banks, 0. W. — Electric spark under the Microscope. 



[Mr. Banks showed, under the Microscope, the electric spark in its 

 passage between the terminals of a 1/4 in. spark induction-coil 

 attached to a Grenet bichromate solution battery. Two vulcanite 

 slides liad been prepared, on which were fastened adjustable platinum 

 stiips connected with the battery wires and terminating in brushes of 

 platinum wires of extreme tenuity. The electric fluid, iu its passage 

 from one terminal to the other, formed a very attractive object under the 

 Microscope. One of the slides was used to show the efi"ect on the electric 

 spark of interposing films of soot of different thicknesses. In its passage 

 through these the current was deflected into meandering lines, aroimd 

 which scintillated showers of sparks. The particles of soot could be seen 

 arranging themselves in symmetrical groupings around the terminals.] 



Proc. San Francisco Micr. Soc, June 10th, 1885. 

 See Micr. Bulletin (Queen's), II. (1885) p. 80. 

 Bausch, E. — Manipulation of the Microscope. 



[Contains chapters on Simple Microscopes, The Compound Microscope, Ob- 

 jectives and Eye-pieces, Eequisites for work, How to work. Advanced 

 Manipulation, Substage Illumination, Care of a Microscope, and Con- 

 iderations in testing Objectives.] 



96 pp. and 27 figs., 8vo, Rochester, N.Y., 1885. 



