

ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 223 



composing eacb grain, without change in their orientation within each 

 grain, except in so far as such change may occur through the production 

 of twin-crystals. 



Bibliography. 



Butschli, 0. — Untersuchungen iiber Mikrostrukturen des erstarrten Schwefels 

 nebst Bermerkungen iiber Sublimation, Uberschmelzung und Ubersattigung des 

 Schwefels und einiger anderer Kbrper. (luvestigations upon the Microstructure 

 of Solidified Sulphur, together with remarks upon the Sublimation, Super- 

 melting and Super-saturation of Sulphur and of certain other bodies.) 



Leipzig, W. Engelmann, 1900, iv. and 96 pp., 4 pis. 



Butschli, O. — Untersuchungen iiber die Mikrostruktur kiinstlicher und natiir- 

 licher Kieselsauregallerten (Tabascbir, Hydrophane, Opal). (Investigations upon 

 the Microstructure of Artificial and Natural Colloid Silicic Acids (Tabascheer, 

 Hydrophane, Precious Opal.) 



Reprinted from Verhandi d. Naturhist.-Med, Verein* zn Heidelberg 



N.F. vi. (1900) pp. 287-348 (3 pis.). 



Fay, H., & S. Badlam — The Effect of Annealing upon the Physical Properties 

 and the Microstructure of a low Carbon Steel. 



[A study of the Microstructure, together with the physical properties of 

 metals, has given rise to the science which has been designated Metallo- 

 graphy.] Technology Quarterly, xiii. (1900) pp. 29-314 (11 figs.). 

 Hanauskk. T. F. — Lehrbuch der technischen Mikroskopie. (Handbook of 

 Technical Microscopy.) 2 Lieff., Stuttgart, 1900, 81 figs. 

 Happen heim, A. — Grundriss der Farbchemie zum Gebrauch bei mikroskopischen 

 Arbeiten. (Elements of Colour-Chemistry for use in Microscopic Work.) 



Berlin, 1901, Svo, 476 pp. 



Kinne, F. — Das Mikroskop im chemischen Laboratorium. Elernentare Anleitung 

 zu einfachen Krystallographisch-optischen Untersuchungen. (The Microscope 

 in the Chemical Laboratory ; Elementary Instruction for simple crystallographic- 

 optical investigations.) Hanover, 1900, 8vo. 74 pp., 202 figs. 



zyjionowicz, L. — Lehrbuch der Histologic und der mikroskopischen Anatomie, 

 mit besonderer Berucksichtigung des menschlichen Kb'rpers, einschliesslich der 

 mikroskopischen Technik. (Manual of Histology and of Microscopic Anatomy, 

 with especial reference to the Human Bodv, including Microscopical Technique.) 



5 Lieff., Wurzburg (Stuber). 1900. 



v 



