I QI 2] 



DA CH NOW SKI— BOG PLA N TS 



509 



the smaller transpiration value from that observed in others. The 

 marked difference is undoubtedly due to the nutritive value of 



feature of 



the assimilable organic 



com 



particular 



metabolism 



1. 

 2. 



3- 

 4. 



5. 



6. 



TABLE III 



AND VARIETIES OF BEANS 



February 24-MARCH 11, 19 10 



< 



Species and varieties 



Dolichos 22025 



Dolichos 8542 



Phaseolus mungo var. 183 10. 

 Var. 1 7096 



Phaseolus mungo 



Guar 



Transpiration in 



grams 



I50. 



.68 



99 



54 



66. 



46 



69. 



98 



56. 



35 



36. 



•57 



Green weight 

 produced 



3-75 

 1.52 



1-34 

 2.32 



1.24 



1. 21 



Atmometer: 7.3 cc. daily average 



Water required for 



1 gram of 



green matter 



40.18 

 65.61 



49-59 

 30.16 



45 *32 

 3 2 - 2 3 



TABLE IV 



Transpiration data of wheat plants in solutions of sterilized bog water 



and peat, inoculated with bog bacteria 



March 31-ApRiL 15, 1910 



1. 



2. 



3- 

 4- 



5- 

 6. 



7. 

 8. 



9- 



10. 



11. 

 12. 



Culture 



C. 19 b.-f-f 



C. 15 



D. 20 



C. 13 



C 7 



C. 16 



C. 19 (fungus) 



C. 17 (fungus) 



C. 21 (fungus) 



Alder tubercles 



Mixed culture of above. 



Transpiration in 

 grams 



Green weight 

 produced 



12 



8.90 



14.90 



I3-08 



I5-65 



15 -25 



1793 

 17.40 



18.07 



27-33 



50.3I 

 67.48 



1. 16 



O.80 



1. 14 



0.94 

 0.98 



0.93 

 I.60 



I. Ol 



I.06 



2.36 

 2.20 



I.92 



Water required for 



1 gram of 



green matter 



IO.37 



II. 12 



13.07 



1391 

 15.96 



16.39 



11.20 

 17.22 



17.04 



11.58 



22.86 



3514 



Atmometer: 11 . 7 cc. daily average 



ing in agreement with the several experiments which were con- 

 ducted, that analyses with reference especially to the ratio between 

 the carbon and nitrogen content of the plants are much to be 

 desired. Experiments on the availability of nitrogen in peat have 

 been made by a number of workers, but mostly upon sun-dry or 



