142 C. J. T. D DRYLAND 



THE NON-NITROGENOUS GLTJCOSIDE GROUP 



Non-nitrogenous Glucosides as a source of energy, + ammonia nitrogen. 



Phenolic glucosides Oxycumarin glucosides 



Arbutin Aesculin 



Methylarbutin Daphnin 



Phlorhizin Fraxin 



Glycyphyllin Oxyanthraqunone glucosides 



Hesperidin Ruberythrinic acid 



Naringin Rubiadin glucoside 



Iridin Frangulin 



Baptisin Oxyflavone glucosides 



Alcoholic glucosides Apiin 



Salicin Fustin 



Populin Quercitrin 



Coniferin Sophorin 



Syringin Xanthorhamnin 



Aldehydic glucosides Miscellaneous glucosides 



Helicin Saponins 



Salinigrin Digitonin 



Acidic glucosides Digitalin 



Convolvulin Saponarin 



Jalapin Camatambin 

 Strophantin 

 Gaultherin 



THE ESTER GROUP 



Esters'" as a source of energy, +ammonia nitrogen. 



The entire series, after the first few types, may be repeated 

 three times by substituting in place of the ammonia first, nitrite, 

 -second, nitrate, -third, cyanide nitrogen. We would have then, 

 nitrite-aliphatic-acid group; nitrite carbohydrate group; etc., 

 or the nitrite series; and the nitrate aliphatic acid group and 

 nitrate alcohol group, etc., or the nitrate series and cyanide- 

 aliphatic-acid group and cyanide aldehyde group, etc., or the 

 cyanide series. 



Should occasion arise we may exclude all forms of nitrogen 

 and carbon from the solution and substitute a series of amino- 

 acids, amides, amino compounds, ureides, proteins, nitrogenous, 

 glucosides, or cyanogen compounds, and thus build up series 

 of media with each respective group. 



* The utility of this group is doubtful, it being probable that if one of the 

 constituents of the ester is available to an organism the ester may be also. 



