New York AGRICULTURAL EXPERIMENT STATION. 3043 
tionally good record for the sulphate of ammonia when used 
without manure and it was not in accord with its record either 
with the preceding or the following crop except where it was 
used in combination with lime. 
Both kinds of lettuce did better on the clay loam than on the 
sandy loam. This is very noticeable with the check crops. The 
check crop on the clay loam exceeded that on the sandy loam in 
the ratio of 7 to 1. 
SPASON OF 1900-01. 
The experiments in 1900-01 followed the lines of the preceding 
year’s work except that one box of the three included in each 
soil treatment was given one ounce of air-slaked lime when the 
soil was mixed. Occasional tests of the soil made previously had 
failed to discover any acidity, but it was desirable to learn 
whether or not the repeated application of the commercial fer- 
tilizers had brought about unfavorable conditions which the lime 
would correct. The use of the lime was, almost without excep- 
tion, followed by more or less unfavorable results. In some 
cases the yield was but slightly decreased, in most cases it was 
noticeably decreased and in a few cases the yield was not even 
half that obtained on the unlimed soils. Where nitrate of soda 
was applied without manure to sandy loam and where sulphate 
of ammonia was used without manure on the clay loam, the 
limed soils gave somewhat better yields than those not limed. 
The seed was planted in the usual manner Sept. 28. The head 
lettuce came through all right but for some reason not under: 
stood the loose lettuce did not. It was replanted Oct. 9. This 
time it grew all right, but of course it remained more backward 
than the head lettuce. The head lettuce grew rapidly on the 
soils which received manure, being markedly superior from the 
start to that on the soils which were not manured. On the whole 
the highest yield of head lettuce came from the use of 10 per ct. 
manure, but that from 5 per ct. was nearly as large. With 334 
per ct. manure and no commercial fertilizers the yield in each 
case fell below the average of the boxes having 5 per ct. manure 
combined with commercial fertilizers, as also, usually, did the 
