490 



LIST OF TABLES 



TABLE NO. P \r,f. 



XXVI. Percentage Composition of the Ash of Various Organisms 296 

 XXVII. Relative Abundance of Various Elements in the Ash of 



Organisms ......... 297 



XXVIII. Nutritive Solutions for Phanerogams .... 301 



XXIX. Inorganic Matters in Potable Water . ' . . . . 301 



XXX. Nutritive Solutions for Algae 302 



XXXI. Nutritive Solutions for Fungi 302 



XXXII. Comparison of Ash in New-born Dog and in the Milk of 



its Mother 303 



XXXIII. Results of feeding Tadpoles on Various Substances . . 329 



XXXIV. Showing for Various Mammals the Time required to 



double the Birth-weight correlated with the Chemi- 

 cal Composition of the Milk of the Species . . 331 

 XXXV. The Total Dry Weight of a Crop of Aspergillus reared 

 in the Absence and in the Presence of Various Quan- 

 tities of Irritating Substances 332 



XXXVI. Interval elapsing before Germination when Spores of 

 Penicillium are kept in Moist Chambers over Vari- 

 ous Solutions of Sodium Chloride .... 351 

 XXXVII. Relation between the Humidity of the Soil and the Amount 



of Dry Substance produced 353 



XXXVIII. Relation between Concentration of the Solution and Ger- 

 mination of Peas ....... 363 



XXXIX. Relation of Regeneration of Nais to Strength of Solution 365 

 XL. Relation of Reproduction by Fission of Dero to the 



Strength of the Solution ...... 366 



XLI. Relative Size of Tadpoles reared in the Light and in the 



Dark 426 



XLII. Average Dimensions of Tadpoles reared behind Clear and 



Colored Screens . . . . . . . . 433 



XLIII. Percentage Deviations in Length of Larvae of Strongylo- 

 centrotus reared behind Various Colored Screens, 

 from Length of Larvae reared in White Light . . 434 

 XLIV. Relative Time of Hatching of Organisms reared behind 



Colored Screens 434 



XLV. The Optimum Intensity for Phototropism in Various 



Species of Plants ....... 439 



XLVI. Minimum Intensity for Phototropic Response in Various 



Species of Plants 439 



XLVII. Average Total Increments in Length of the Plumules of 



Seedlings subjected to Different Temperatures . . 451 

 XL VIII. Average Increments in Length of the Radicles of Various 



Seedlings subjected to Different Temperatures . . 451 

 XLIX. Time required for Spores of Penicillium to germinate, 

 produce Visible Mycelium, and to form Spores, at 

 Various Temperatures ...... 452 



