178 



CHARLES OSCAR CHAMBERS 



rather strikingly high results as compared with the latter and 

 sets a high pace for his followers. With his name ends the list 

 of earlier investigators. 



It is to Ternetz^ more than any other that we are indebted 

 for a wealth of data and detailed description of methods in 



TABLE 1 

 Early investigators and results reported by them 



NAME OF AUTHOR 



'93 Berthelot 



'95, Purewietsch. 

 '01, Saida 



KIND OF CARBO- 

 HYDRATE 



1% acid tartaric 

 5% saccharose 

 17% cane sugar 



FORM OF 



N 



ammontartr. 

 NH4NO3 

 NH4CI 



o 



H 



z 



27 



105 

 25 



Recent investigators and results reported by them 



'03, Remy. . . 

 '07, Ternetz. 



'08, Froelich. 



'08, Latham . 

 '11, Lipman. . 



2% dextrose 

 5% dextrose 



5% dextrose 



5% cane sugar 

 2% dextrose 



378 



48 



174 



91 



Investigators who fou7id negative results 



'91, Winogradsky 



'02, Czapek 



'10, Dox 



'11, Duggar and K. 



'04, Koch 



'11, Pennington . . . 



'13, Chambers 



3% dextrose 

 many kinds 

 1% dextrose 

 2% dextrose 



00 



? 



00 

 00 

 00 



handling this type of work. While her work was chiefly on 

 fungi of the mycorrhiza group yet she reports fixation by Asper- 



* Ternetz, Ch., Die Assimilation des atmospharischen Stickstoffs durch einen 

 torfbewohnenden Pilz. Ber. d. Deut. Bot. Ges. 22: 264-272 and 44: 1904. 353- 

 485. 1907. 



