362 PROCEEDINGS OP THE AMERICAN ACADEMY. 



assigned to this third determination is in slightly lowering the mean 

 of the other two. 



The final most probable values for Ice VI are as follows: for the 

 compressibility O.O545, and for the thermal dilatation 0.000120 

 cm.V gm. over the range 6360-10,000 kgm. and 0° to 20°. 



The cost of much of the apparatus used in this investigation was 

 defrayed by an appropriation from the Rumford Fund of the 

 American Academy. 



Jefferson Physical Laboratory, 

 Harvard University, Cambridge, Mass. 



