120 



Scientific Proceedings (92). 



12. Speed of destruction of spores of anthrax by carbolic acid. 



13. Velocity of ontogeny in the frog. 



14. Velocity of bulk increase in maize seedlings. 



15. Rate of digestion in cold blooded vertebrates. 



16. Rate of respiration in Pisum saliva. 



17. Activation of star-fish eggs by chemical agents. 



18. Velocity of C0 2 assimilation by the leaves of the cherry-laurel. 



19. Expansion of liquids. 



20. Vapor pressure. 



B. The following forces and processes show the negative 

 coefficient to temperature-increments. Q i0 values with the — 

 sign. 



1. Surface tension. 



2. Polarization capacity. 



3. Electromotive force of electro-chemical cell. 



4. Electromotive force of nerve. 



5. Duration of latent period of smooth muscle. 



6. Solubility of gases in water. 



7. Duration of life in Drosophila. 



8. Elasticity. 



9. Viscosity (absolute internal friction) of dog serum. 

 10. Cohesive properties generally. 



C. Besides these two classes there is another group of activities 

 which shows a positive or a negative coefficient, depending upon 

 conditions, <2io = *,as follows: 



1. Osmosis. 



2. Dialysis. 



3. Cataphoresis. 



4. Tendency toward precipitation. 



5. Solubility of salts : 



Most salts + 

 Na S0 4 - 



Many organic salts — 



6. Strength of linkage in the second chromosome of Drosophila, 



— at low temperatures, + at high temperatures. 



