612 SUMMARY OF CURRENT RESEARCHES. 



Osmond, F., & G. Cartaud — On the Crystallography of Iron. 



[The authors anive at results which differ but little from those of Mr, 

 Osmond's previous experiments. These were: — (1) Iron, in its three 

 states, crystallises in the cubic system ; (2) Gamma-iron, generally in 

 octahedra, more or less perfect ; (3) Beta-iron and alpha-iron in cubes ; 

 (4) Beta-iron and alpha-iron form isomorphous mixtures ; (5) Gamma- 

 iron does not form isomorphous mixtures with beta-iron ; (6) The trans- 

 formation of gamma-iron into beta-iron appears to include a change in 

 the planes of symmetry.] 



MetaUographist, III. (1901) pp. 236-52 (9 figs.). 



Eottgkb, H., & L. Schmelck — Apparatus for obtaining Water-Samples for 



Bacteriological Examination. Chemiher Zeitung, 1900, pp. 873 and 1035. 



See Bot. Centralbl., LXXXVI. (1901) p. 40. 

 Sauvbdr, A. — The Micro-structure of High Carbon Steel quenched near its Melting 

 Point. 



[Discusses the photomicrographs of Mr. F. C. Lau, reproduced in the July 

 (1900) number of the MetaUographist.'] 



MetaUographist, July 1901, pp. 252-7 (1 fig). 

 Schimper, A. F. W. — Anleitung zur mikroskopischen Untersuchung der vege- 

 tabilischen Nahrungs- und Gennssmittel. 



2" umsearbeitete Auflage (F. Fischer), Jena, 1900. 

 Stine, W. M. — The Microscopic Study of Metals. 

 [A useful practical paper.] 



MetaUographist, Oct. 1900, pp. 314-20: and Journ. of App. Micr., 



March 1900, p. 786 (2 figs.). 



