Report of Experiments on the Growth of Wheat. 107 
rather cold, but otherwise the month was mild, with a good deal . 
of rain. May was very fine, the temperature being much above, 
and the rain-fall much under the average. June was very un- 
usually hot and dry until towards the end of the month, when 
the weather broke up with a thunder-storm. July was variable, 
but, Upon the whole, seasonable, with a good deal of very hot 
weather, and but little rain. In the beginning of August there 
was great heat with heavy thunder-storms, and .excessive amount 
of rain, the rest of the month being favourable. September was 
also generally warm and favourable, but with a fair amount of rain 
towards the end of the month. The dew-point generally ranged 
high throughout June, July, August, and September ; but, with 
the prevailing high temperatures, the degree of humidity of the 
air was, in June and July somewhat below, and in August and 
September not much above the average. 
Upon the whole, the winter, spring, and summer of 1845-6 
were unusually warm, the summer dry, and the harvest-time 
generally favourable. 
With these qualities of season, the wheat-crop of the country 
was estimated to be below the average in amount, but to be of 
very good quality. 
In the experimental field mineral manures were employed 
more generally, in greater variety, and in greater abundance, than 
in the preceding season. Ammonia-salts, or sape-cake, or both, 
were also used on many of the plots. Among the mineral 
manures, the ashes of wheat-straw, and Liebig's wheat-manure, 
were repectively employed alone, with ammonia-salts, with rape- 
cake, and with both ammonia-salts and rape-cake. Upon the 
whole, there was more of uniform plan in the selection and 
arrangement of the manures in this season than formerly ; and, as 
already referred to, the double-land plots were now, and hence- 
forth, subdivided ; though, especially in the later years of the 
experiments, the. two lands designated a and ^ respectively, gene- 
rally served as duplicates with the same manure. Passing over 
all details, Table III. (p. 108) is a summary of the results ob- 
tained in this season. 
The experimental wheat-crop of 1846 was by no means so 
bulky as that of 1845 ; but (as also over a large area of the 
country) the quality was very much above the average, both the 
proportion of corn to straw, and the weight per bushel of dressed 
corn, being very high. 
Taking the unmanured produce of dressed corn as the 
standard for comparison, the farmyard manure gave an increase 
of bushels ; mineral manure alone (though succeeding am- 
monia-salts or rape-cake, or both, in the preceding season), 
of under 3 bushels ; 2 cwts. of sulphate of ammonia alone 
(after ammonia-salts in the preceding year, and mineral manure 
