58 CARNEGIE INSTITUTION 



III. A power house at some distance (at least 200 feet) from the 

 laboratory, to contain the machine shop, steam power, 

 dynamos, storage batteries, the heating and refriger- 

 ating plants, rooms for special researches likely to 

 involve tremors or electrical disturbances. 



APPENDIX 2 TO REPORT OF ADVISORY COMMITTEE 



ON GEOPHYSICS. 



Eetters from European Scientists Relative to Research 



IN Geophysics. 



CONTENTS. 



Page 



Prof. H Poincare to Mr. V/alcott, May 27, 1902 58 



Lord Kelvin to Mr. Walcott, June 2, 1902 59 



E. Suess to Mr. Walcott, June 7, 1902 60 



Dr. Ernst Mach to E. Suess, May 29, 1902 61 



F. Becke to E. Suess, June 6, 1902 , 62 



Dr. O. Kohlrausch to Mr. Walcott, June 15, 1902 63 



J. H. van't Hoff to Mr. Walcott, June 22, 1902 65 



Prof. G. H. Darwin to G. F. Becker, June 26, 1902 66 



Dr. W. Nernst to Mr. Walcott, August 26, 1902 68 



In response to a letter of inquiry from the Secretary of the Com- 

 mittee on Geophysics, a number of European scientists kindly gave 

 their views on a laboratory for geophysical research. 



IPro/. H. Poincare to Mr. Walcott, May 27, igo2,'\ 



[Translation.] 



SoRBORNE, Paris, France, May ^7, 1902. 

 Dear Sir : 



There is no doubt that advances in the physics of the globe will 

 be of the highest interest, as well from a theoretical as from a prac- 

 tical point of view. I believe that useful work could be done in 

 this direction, and with a prospect of success, if a man competent 

 in such matters would undertake the direction of the work, and 

 were to have at his disposition sufficient resources and a sufficietn 

 number of assistants. 



Please accept, my dear sir, the assurance of my distinguished 



esteem. 



H. Poincare;. 



To C. D. Walcott, 



Secretary Carnegie Institution, Washington, D. C. 



