840 SUMMARY OF CURRENT RESEARCHES, ETC. 



SoEBY, H. C. — On the detection of Sewage Contamination by the use of the 

 Microscope, and on the purifying action of minute Animals and Plants. 



[Post.'] Journ. Soc. Arts, XXXII. (1884) pp. 929-30. 



Stowell, C. H. — Studies in Histology. IV. Staining. 



The Microscope, IV. (1884) pp. 149-53. 

 „ „ How to harden Balsam Mounts. 



[Reply to inquiry how to harden balsam mounts quickly and safely. " We 

 have never tried to hasten the drying or hardening of the balsam. 

 Should we desire to have a mount become hard quickly we would use 

 balsam of such a consistence that it was fluid only when warm and quite 

 solid and firm when cold, or we could expose the mounted preparation to 

 a low temperature ; this could be accomplished by placing the mount in 

 a drying oven or in a sand bath. Nearly all specimens, however, can be 

 mounted in warm balsam without fear of injury, and then as soon as the 

 balsam becomes cold it is firm and hard."] 



The Microscope, IV. (1884) p. 159. 

 „ „ Studies in Histology. V. 



[Metallic stains. — Mounting.] 



The Microscope, IV. (1884) pp. 171-6. 

 „ „ A new solid Watch-glass. \_Post.'] 



The Microscope, IV. (1884) pp. 176-7. 

 SuDDUTH, W. X. — Dento-embryonal Histology and Technology. 19 pp. and 

 12 figs. 8vo, Chicago, 1884. 



W., A. W. — Mounting Fresh-water Algae. 



[" After trying all sorts of media .... I came to the conclusion that none 

 was so good as plain water with the least addition of camphor water to 

 prevent fungoid growths." Also suggests to preserve the green colour 

 (1) the use of water recently boiled and then closed up in a flask to minim- 

 ise the amount of air dissolved in it ; (2) to put the slide in the dark 

 immediately after mounting.] 



Micr. News, IV. (1884) p. 216. 

 Wagstaff, E. H. — Pond Life in Winter. 

 [List of objects found in one haul.] 



Amer. Man. Micr. Journ., V. (1884) pp. 144-5. 

 Whitman, C. O. — A simple Section-smoother. 



[Kingsley's, ante, p. 659. " For use with the Sterling (well) Microtome it 

 is evidently ill adapted, for the ends which come underneath the blade 

 would interfere with the work."] 



Amer. Natural, XVIII. (1884) p. 844 (1 fig.). 

 WiCHMANN, A. — Ueber eine Methode zur Isolirung von Mineralien behuf ihrer 

 mikrochemis6hen Untersuchung. (On a method for isolating minerals for their 

 investigation micro-chemically.) {_Post^ 



Zeitschr. f. Wiss. Mikr., I. (1884) pp. 417-9. 

 Wilder and Gage. — On the use of Vaseline to prevent the loss of Alcohol from 

 specimen Jars. 

 [Used inter alia to prevent the sticking of the covers or stoppers of cement 

 vials.] 



Proc. Amer. Assoc. Adv. Sci., XXXII. p. 818. 

 Cf. Amer. Natural., XVIII. (1884) p. 845. 



WoLLE, F. — Fresh-water Algae. 

 [Directions for collecting.] 



Amer. Mon. Micr. Journ., V. (1884) pp. 129-30, 

 from ' Desmids of the United States.' 



