490 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



Instructions. To examine and report upon the abrasion and 

 wear of railway wheels, axles, rails, and other materials, un- 

 der conditions of actual use. 



On Armor Plate (B) : Lieutenant-colonel Q. A. Gillmore, 

 U. S. A., chairman ; A. L. Holley, C. E. ; R. H. Thurston, C. E. 

 Instructions. To make tests of armor plate, and to collect 

 data derived from experiments already made to determine 

 the characteristics of metal suitable for such use. 



On Chemical Research (C) : A. L. Holley, C. E., chair- 

 man ; R. H.Thurston, C. E. Instructions. To plan and con- 

 duct investigations of mutual relations of the chemical and 

 mechanical properties of metals. 



On Chains and Wire Ropes (D) : Commander L. A. 

 Beardslee, U. S. N., chairman ; Lieutenant-colonel Q. A. Gill- 

 more, U. S. A. ; Chief Engineer D. Smith, IT. S. N. Instruc- 

 tions. To determine the character of iron best adapted for 

 chain cables, the best form and proportions of link, and the 

 qualities of metal used in the manufacture of iron and steel 

 wire-rope. 



On Corrosion of Metals (E) : W. Sooy Smith, C. E., 

 chairman ; Lieutenant-colonel Q. A. Gillmore, U. S. A. ; Com- 

 mander L. Beardslee, U. S. N. Instructions. To investi- 

 gate the subject of the corrosion of metals under the condi- 

 tions of actual use. 



On" the Effects of Temperature (F) : R. H. Thurston, 

 C. E., chairman ; Lieutenant-colonel Q. A. Gillmore, U. S. A. ; 

 Commander L. A. Beardslee, U. S. N. Instructions. To in- 

 vestigate the effects of variations of temperature upon the 

 strength and other qualities of iron, steel, and other metals. 



On Girders and Columns (G) : W. Sooy Smith, C. E., 

 chairman ; Lieutenant-colonel Q. A. Gillmore, U. S. A. ; Chief 

 Engineer D. Smith, U. S. N. Instructions. To arrange and 

 conduct experiments to determine the laws of resistance of 

 beams, girders, and columns to change of form and fract- 

 ure. 



j On Iron, Malleable (II) : Commander L. A. Beardslee, 

 l U. S. K, chairman ; W. Sooy Smith, C. E. ; A. L. Holley, C. E. 

 Instructions. To examine and report upon the mechanical 

 and physical properties of wrought iron. 



On Iron, Cast (I): Lieutenant - colonel Q. A. Gillmore, 

 U. S. A., chairman ; R. II. Thurston, C. E. ; Chief Engineer D. 



