34:0 Report on the Field and Feeding Experiments at Wohurn. 
weather enabled the wheat to be carted on August 15th in good 
condition, and stacked. It was threshed in the field on October 
21st to 24th, the straw being weighed at once, and the corn 
stored in the granary, where it was weighed on October 28th 
with the usual care. The results are given in Table I. 
The yield has in every case been higher than that of either 
1 882 or 1883, the season having been a very favourable one. 
Speaking generally, the produce was very similar to that of 
1881. The unmanured plots, 1 and 7, show a decided increase, 
the result in the case of plot 7 being the highest as yet ob- 
tained without manure, although eight successive corn crops 
have been grown. 200 lbs. of ammonia-salts alone proved 
decidedly better than 275 lbs. of nitrate of soda alone, giving 
also a greater weight per bushel and more straw. Where 
minerals alone were applied, as in former years, the produce 
was lower than that of the unmanured plots. As has been 
demonstrated in former years by these experiments, the use of 
either ammonia-salts or nitrate of soda in conjunction with 
mineral manures was productive of heavier crops than could be 
obtained by using either class of manure alone. 200 lbs. of 
ammonia-salts gave, with minerals, a rather better result than 
275 lbs. nitrate of soda, also with minerals, the latter giving, 
however, a larger yield of straw. When double the amount 
(400 lbs.) of ammonia-salts was used with minerals, only 2 
bushels more per acre were obtained than with the single 
quantity, but doubling the dose of nitrate of soda gave an 
increase of 8 3 bushels, minerals also being used. This latter 
proved to be the highest produce of wheat as yet obtained in 
these experiments ; it did not exceed that from 400 lbs. of am- 
monia-salts and minerals by more than 2 bushels, but gave a very 
much larger yield of straw. These two last-mentioned results 
were got on plots 8b and 9l!, which, it will be remembeYed, had 
been manured in 1883 with minerals alone, yielding then 
respectively 17*3 and 18'6 bushels only. The hall-plots 8a and 
9a, manured in 1883 with minerals and 400 lbs. ammonia-salts, 
and with minerals and 550 lbs. nitrate of soda, and then yielding 
45'8 and 43"8 bushels respectively, upon the omission of the 
ammonia-salts and nitrate of soda in 1884, fell to 32'5 and 21*9 
bushels. The fall when ammonia-salts were omitted was 
hardly as pronounced as in former years. At the same time it 
must be borne in mind that the unmanured plots gave this 
season a much increased produce, reaching 2G"(i bushels in the 
case of plot 7. Where nitrate of soda was omitted (plot 9a), 
the fall was as marked as before. On the plots where dung 
had not been applied since 1881, the better season gave rather 
