L. MECHANICS AND ENGINEERING. 491 



Smith, U. S. N". Instructions. To consider and report upon 

 the mechanical and physical properties of cast iron. 



On Metallic Alloys (J) : R. H. Thurston, 0. E., chair- 

 man ; Commander L. A. Beardslee, U. S. N. ; Chief Engineer 

 D. Smith, U. S. N. Instructions. To assume charge of a se- 

 ries of experiments on the characteristics of alloys, and an 

 investigation of the laws of combination. 



On Orthogonal Simultaneous Strains (K) : W. Sooy 

 Smith, C. E., chairman ; Commander L. A. Beardslee, U. S. N. ; 

 R. H. Thurston, C. E. Instructions. To plan and conduct a 

 series of experiments on simultaneous orthogonal strains, 

 with a view to the determination of laws. 



On Physical Phenomena (L) : W. Sooy Smith, C. E., 

 chairman ; A. L. Holley, C. E. ; R. H. Thurston, C. E. In- 

 structions. To make a special investigation of the physical 

 phenomena accompanying the distortion and rupture of ma- 

 terials. 



On Re-Heatixg and Re-Rolling (M) : Commander L. A. 

 Beardslee, IT. S. N., chairman ; Chief Engineer D. Smith, 

 U. S. N. ; W. Sooy Smith, C. E. Instructions. To observe 

 and to experiment upon the effects of re-heating and re-roll- 

 ing, or otherwise re-working, of hammering as compared 

 with rolling, and of annealing the metals. 



On Steels Produced by Modern Processes (X) : A. L. 

 Holley, C. E., chairman ; Chief Engineer D. Smith, U. S. N". ; 

 "W. Sooy Smith, C. E. Instructions. To investigate the 

 constitution and characteristics of steels made by the Besse- 

 mer and other modern methods. 



On Steel for Tools (O) : Chief Engineer D. Smith, 

 U. S. N., chairman ; Commander Beardslee, U. S. 1ST. ; W. Sooy 

 Smith, U. S. N". Instructions. To determine the constitu- 

 tion and characteristics and the special adaptation of steels 

 used for tools. 



The secretary of the board announces that special re- 

 searches have been assigned to the committees of the board 

 in the interval during which the regular work of the board 

 is delayed by the preparation of the necessary testing ma- 

 chinery, and during such periods of leisure as may after- 

 ward occur. Furthermore, that the investigations will be 

 conducted with critical and scientific accuracy, and will for 

 a while consist in the minute analysis of a limited number 



