166 F. B. GUTHRIE AND R. HELMS. 
All the pots were exposed to exactly the same conditions 
as to light, warmth, water, etc., throughout the course 
of the experiments. 
Experiments with Common Salt. 
Eight pots were filled with the soil and superphosphate 
together with the following quantities of common salt per 
100 tbs. of soil :— 
No. 41, °10 per cent. of NaCl. 
so 4a ao 5 ee 
so ese 20 5 A 
9 ee, oe ss 52 
7 ho oe « ny 
» 46, °35 43 S 
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The pots were sown on October 24th, 1902, with 7 maize 
kernels in each pot, the surface being covered with a mulch 
of shredded cocoa-nut fibre and the soil kept moist through- 
out the experiment. 
The following notes were made on November 3rd with 
regard to the germination :— 
Pots 41 and 42 had germinated well. 
In 438, 44, 45, the germination was retarded. 
In 46 much, and 47 very much retarded, whilst in 48 the 
seeds did not germinate. 
On November 21st the further growth of the plants was 
noted :— 
In Nos. 41 and 42 the growth was fair, but quite markedly 
affected. 
In No. 43 the growth was very strongly affected. 
In Nos. 44, 45, and 46 the plants were dying and very 
nearly dead. 
In No. 47 the plants were all quite dead. 
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