136 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Mendenhall, T. C. — On tlie Fasoldt Stage Micrometer. 

 [Records results of measurements^SOO or 600.] 



Proc. Amer. Soc. Micr., 5th Ami. Meeting, 1882, pp. 201-8 (2 pis.). 

 Mercer, A. C. — Stereoscopic effects obtained by the high-power binocular arrange- 

 ment of Powell and Lealand. 

 [Vol. II. (1882) p. 271.] 



ProG. Amer. Soo. Micr., 5th Ann. Meeting, 1882, pp. 127-30. 

 ' Microscopical News, and Northern Microscopist ' — Note " to our readers " [on the 

 change in title and as to future arrangements.] 



Micr. News, III. (1883) pp. 1-2. 

 Moore, A. Y. — Camera Lucida. 

 [Vol. II. (1882) p. 865.] 



Proc. Amer. Soc. Micr., 5th Ann. Meeting, 1882, p. 283. 

 NoBERT, F. A. — Die hochste Leistung des heutigen Mikroskops und seine Priifung 

 d urch kiinstliche und natiirliche Objecte. (The best performance of the present 

 Microscopes and their testing by artitieial and natural objects.) IPost.'] 



M. T. Aaturwiss. Ver. Neu-Vorpommern, XIII. (1882) pp. 92-105. 

 Pease's (J. L.) new Method of Attaching Objectives. 



[A Nose-piece — " its operation resembles that of the self-centering chucks 

 used by mechanics ; the objective is held firmly as in a vice, and its center- 

 ing is perfect. Changing objectives is accomplished with great rapidity 

 and ease."] 



Amer. Mm. Micr. Journ., III. (1882) pp. 237. 



1'elletan, J. — Criticism of Dr. Carpenter's remarks on objectives of small and 



large aperture at the Montreal meeting of the Amor. Assoc. Adv. Sci. 



[Supra, p. 120.] Journ. de Microgr., VI. (1882) pp. 5i3-4. 



Phin, J.— How to use the Microscope. 5th ed. 264 pp. 12mo, New York, 1882. 



Postal Microscopical Society. — Rules and Names and Addresses of Members. 



Supplt. to Vol. I. of Journ. Post. Micr. Soc. (1882) 17 pp. 

 " Prismatique.'' — Object-glass working, III. 



E7igl. Mcch., XXXVI. (1883) p. 397. 

 Pritchard, Andrew, Death of. Sci.-Gossip, 1883, p. 16. 



Projection-Microscopes. 



[Note a propos of Dr. H. Schroder's aitirle II. (1882) p. 673. " The perfecting 

 of such Microscopes would be a desideratum."] 



Journ. of Sci., IV. (1882) p. 753. 

 Robinson, W., junr. — Micro-photography. 



[Reply to " Density," II. (1882) p. 863.—" The distance between the visual 



and actinic foci is the same no matter how much the conjugate focus may 



vary."] F7i!jl. Mech., XXXVI. (1882) p. 324. 



Rogers, W. A. — A study of the problem of fine rulings with reference to the 



limit of naked-eye visibility and microscopic resolution. 



[Title (only) of paper read in the Microscopical Section of the Amer. Assoc. 

 Adv. Sci.] 



Amer. Natural, XVI. (1882) p. 1050. (Cf. Brief note, also pp. 1042-3.) 

 „ „ On the conditions of success in the construction and the com- 



parison of standards of length. 



Proc. Amer. Soc. Micr., 5th Ann. Meeting, 1882, pp. 231-51 (1 fig.). 



S., W. J. — [Note on the desirability of a universal gauge for eye-pieces and 



substage fittings.] Sci.-Gossip, 1882, p. 276. 



ScuROEDER, H. — [Note recording the discovery of optical glass, by the use of 



which the secondary spectrum is removed, leaving only " an extremely small 



tertiary spectrum which under ordinary conditions is scarcely visible."] 



Centr.-Ztg. f. Opt. u. Mech., III. (1882) p. 261. 

 Scott, E. T. — Microscope Noses and Screws. 



[" Don't believe that one screw that is turned to fit one body, and is properly 

 adjusted, will really be so for another body."] 



Engl. Mech., XXXVI. (1882) p. 362. 



Scovill Manufacturing Co.'s apparatus for phfitograpliing microscopical objects, 



Note on, Amer. Mon. Micr. Journ., III. (1882) pp. 218-9. 



