34 CARNEGIE INSTITUTION 



6. The determination of the heat of formation of all natural com- 

 pounds. 



7. Experiments in the deformation of rocks under conditions of 

 great stress, not only in one direction, but with unequal stresses in 

 different direciiotjs, and under wide ranges of temperature, moisture 

 and other conditions. 



8. Detenu inations of the relations of pressure to the melting point 

 while under ditlerential stress and other variable conditions, includ- 

 ing variable amounts of water, vapors and gases. 



9. Determinations of the conductivity of rocks and the laws of 

 variation of such couductivity under varying conditions of heat and 

 pressure. 



10. Determinations of the elasticity of rocks and the laws of vari- 

 ation of elasticity under varying conditions of heat, ]vressure, change 

 of state and change of substance, involving also experiments on *-he 

 compressibility of rocks. 



11. Experiments and mathematical investigations to determine 

 the nature and quantitative value of the possible sources of internal 

 heat under multiple hypotheses as to the origin<Hl states of the 

 earth . 



12. Determinations of the original distributions of heat under 

 such hypotheses, of the secular loss, of the secular generation of 

 heat by gravitative condensation, of the redistribution of internal 

 heat and its possible relations to deformation and vuicanism. 



13. Tidal deformation by observational deterniinacions in labora- 

 tory and field. 



14. MathematicG-phj'sical reinvestigations of the moon-earth tidal 

 relationship, and its bearings on the past and prospective history of 

 the earth, wrought out under multiple hypotheses covering the full, 

 limits of the probabilities of the case. 



1.5. Tests of the distribution of the internal de\isities, or mass- 

 distribution of the earth hy astronomic data . 



16. Gravimetric measures at specially selected significant points 

 embracing (1) such points as will best determine iha distribution 

 of gravity upon the ocean areas as distinguished uom the conti- 

 nental, and on the border grourd betv/een these, and (2) at such 

 points as show notable variatioriv: 01 uicrease of internal tempera- 

 ture in depth (independent of obvicjis recent volcanic action) to 

 determine whether the observable variations are dependent on i-aria- 

 tions of density, and so possibly are dependent on compression. 



