LIMITS OF ENDURANCE OF DIFFERENT FARM CROPS. 5, SOT 
As the growth was affected by the smallest quantity 
taken (Pot 41), three pots were resown on November 28th, 
with smaller proportions of salt :-— 
._ No. 49 with °025 per cent. NaCl. 
99 oO 99 "050 99 39 
es teat OLS . ” 
All these germinated well and were growing well on 
January 15th, 1903, showing that a quantity of NaCl below 
"1 per cent. has no injurious action on the growth of maize. 
From the above it is concluded that the germination of 
maize is unaffected by the presence in the soil of sodium 
chloride up to ‘2 per cent., and that between °4 and °5 per 
cent. prevents germination. 
The growth of the plant is markedly affected by °1 per 
cent. of sodium chloride, and plants will not grow in soil 
containing °25 per cent. and upwards. 
Experiments with sodium carbonate. 
Hight pots were filled with soil, manured with 10 erms. 
superphosphate each, and sown with 7 maize-kernels on 
October 24th, 1902. The quantities of sodium carbonate 
previously added to the different pots were as follows :— 
No. 52, °10 per cent. Na.CO, 
sj oy) 0 aa nif 
3 04, “29 o 95 
p05 OO 95 As 
pes be $3 is 
pps TAO 3 ‘6 
14: I0,, 4700 ia ys 
59-05 4, 0 +, 
On November 3rd the following notes were made as to 
their germination :— 
No. 52 had germinated perfectly. 
