FITNESS 7 



At first sight it may well seem that inquiry 

 into such a problem must end unsuccessfully 

 in vague and unprofitable guesses. Indeed 

 the past has brought forth no lack of such vain 

 attempts, usually guided by a devotion to 

 the doctrine of design in the service of the- 

 ology. Yet other sciences have grown since 

 1859, and physical and chemical data in 

 abundance are now at hand to aid in a recon- 

 sideration of the environment's fitness, if 



10. The Law and Quantity of the Expansion of Water by 

 Freezing. 



11. The Quantity of Latent Heat absorbed in Thawing. 



12. The Quantity of Latent Heat absorbed in Evapora- 

 tion. 



13. The Law and Rate of Evaporation with regard to 

 Heat. 



14. The Law and Rate of the Expansion of Air by Heat. 



15. The Quantity of Heat absorbed in the Expansion of 

 Air by Heat. 



16. The Law and Rate of the Passage of Aqueous Vapor 

 through Air. 



17. The Laws of Electricity; its relations to Air and 

 Moisture. 



18. The Fluidity, Density, and Elasticity of the Air, by 

 means of which its vibrations produce Sound. 



19. The Fluidity, Density, and Elasticity of the Ether, 

 by means of which its vibrations produce Light." — Whe- 

 well, "Astronomy and General Physics Considered with 

 Reference to Natural Theology." London, 1834, 4th ed., 

 pp. 141-143. 



It is hard to understand how such ideas could have fallen 

 into oblivion. 



