17, 6 Trelease: Salt Requirements of Wheat Plants 551 
TABLE 4.—Kelative dry weights of tops and roots of wheat; also, water- 
absorption data, and the amount of water absorbed for each gram of 
yield of tops and of roots (water requirement), relative to the highest 
as 100; for series I, conducted from January 11 to February 4, 1916. 
Dry weight. Water requirement. 
Water 
Culture No. Tops =e abeerntion: 
(6 plants).| (6 plants). Tops. Roots. 
EIGHT oo ee 60L 60L 58L 80L 66L 
CO gi ee 71L 638L 82L 94H 88 
CRS ae 85 70 97H 94H 95H 
Be sie ere Oe pair eee 70L 58L 83 98H 98H 
5 ies Gare ead ieee BER 80 54L 81L 81L 99H 
COO a ee ee ee 68L 55L 78L 98H 96H 
Oh ea ae 86 80H 87 84 74L 
POUR ao cee 74L 67 80L 89 82 
CW 81 69 84 | 85 82 
OB Ser Ee eee 82 60L 86 86 9TH 
Oh at ee 66 88 85 91H 
Ob ee 79 65L 82L 85 86 
OG 22252 ee ee 80H 85 84 72L 
jiA be EN mp ap emmee te Se eee 70L 63L 74L 87 80 
A ee ee 79 68L 80L 84 87 
Cee ee eee 85 63L 82L 79L. 89H 
Cha: 87H 62L 85 80L 98H 
C62 ee ee 81 77 80L 81L 71L 
PL ces as Ailete T7L 68 83 89 84 
Cle ee 89H 65L 88 81L 92H 
OO ee oe 90H 69 89 82L 88 
OR ee ee 79 67 80L 83 81 
Weel oot ee 77L 65L 83 89 
OP aa 3 ae 93H 66 89 78L 92H 
GSuk 88H 76 90 83 
ROGl 22223: ae 84 65L 85 82L 90H 
CE Se 89H 66 89 82L $2H 
R7C1 gee 83 56L 80L 79L 98H 
RUA eae oe 71L 74 76L, 88 T1L 
Gc. 2L 56L 74L 84 90H 
CB. 80 57L 83 85 100H 
bbos ri ae a a ee 8 ee ee (2058) 
C4 78 67 93H 98H 95H 
C5 86 74 94H 90 88 
C6 81 69 83 85 83 
ps 0; Gunga ee 74L 66 80L 89 83 
Oe oe ee 85 61L 81L 73L 91H 
Wo 98H 15 97H 85 88 
C4 88H 69 90 84 88 
C5 85 78H 88 | 85 TTL 
WIC ee en ee roe pee 76L 65L 80L 87 84 
C2 88H 65L 86 80L. 9H 
c3 87H 59L 79L 97H 
Oi 93H 85H 92H 82L 4L 
R4AC1 17L 62L 81L 87 89H 
Ee ee 100H 80H 100H 82L 85 
