380 STATE BOARD OF AGRICULTURE. 



SERIES VI. 



Series VI. is similar to Series III. except that the bone has been re 

 placed by its PoO-, equivalent in finely ground phosphate rock. The 

 maximum action is shown by c,erm No. 3, giving 0.46% soluble ro05, 

 as against 0.82% by germ No. S in the bone series. Four cultures have 

 shown no solvent action whatever. Yet while fewer germs have given 

 evidence of dissolution in this series than in any other, it will be noted 

 that the amount of P.O^ made soluble by Germ No. 4, B. mycoides and 

 B. subtilis is greater than the amount obtained b.y the corresponding 

 germs on the bone. The detailed' analyses are given in Table No. 9. 



