ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 505 



were each built up of even more minute crystalline ramifications. The 

 crystalline structure of platinum appears to generally resemble that of 

 gold and silver. 



Houghton, S. A. — The Microscopic Structure of Metals. 



[Two interesting lectures before the Institute of Marine Engineers.] 



Shipping Gazette and Lloyd's List, March 6 and 13, 1902, 

 „ „ The Internal Structure of Iron and Steel, with special reference 



to defective material. 



[A lecture before the Institute of Marine Engineers, April 21, 1902. The 

 author gives a very complete resume of our present knowledge on this 

 subject, but avoids the discussion of controversial points. More than 

 thirty of the photographs are original, and deal with cases of failure in 

 metalwork.] 



Shipping Gazette and Lloyd's List, April 24, 1902 ; 

 also as a pamphlet issued by the Institute of Marine Engineers. 

 Stead, J. E. — Metallic Alloys. 



[A lecture before the Cleveland Institution of Engineers, Dec. 10, 1900. A 

 full investigation cf the subject.] 



Metallographist, v. (1902) pp. 110-44 (19 figs.). 

 Nomenclature of Metallography. 



[A preliminary glossary of technical terms, with their French and German 

 equivalents, has been drawn up for the consideration of the International 

 Committee of Metallurgists, which has been appointed to consider this 

 question.] Metallographist, v. (1902) pp. 145-65.. 



August 20th, 1902 



