масадан C xor. <>. ignc алы Ағалы тана 
TABLE OF CONTENTS 
ас ОИК S 1-1 
Тһе effect of surface films 
and dusts on the rate of 
transpiration (with plate 
ЖЕН ODER 2 B. M. Duggar and J. S. Cooley 
Some pure culture methods 
in the alge......... 
The identifieation of the 
most characteristic sali- 
vary organism and its rela- 
tion to the pollution of air 
(with plate2) .......... 
Тһе Polyporacez of Ohio. . 
A contribution to our knowl- 
edge of the relation of cer- 
tain species of grass-green 
alge to elementary nitro- 
gen (with one figure and 
SEM usd 
The Thelephoraces of North 
America. I. (with plates 4 
850 8)....... 2.22 
Indieations regarding the 
source of combined nitro- 
gen for Ulva Lactuca.... 
'The effect of certain condi- 
tions upon the acidity of 
Jacob R. Schramm 
August G. Nolte 
L. O. Overholts 
Jacob R. Schramm 
Edward A. Burt 
G. L. Foster 
tomato fruits....B. M. Duggar and M. C. Merrill 
А method for the differential 
staining of fungous and 
hos o8 .............. 
R. E. Vaughan 
47-80 
81-155 
157-184 
185-228 
229—235 
231—240 
241-242 
