74 
Utilisation of Town Seioage. 
fully 4 tons where at the rate of about 6000 tons ; and somewhat 
under 4 tons where at the rate of about 9000 tons. In the ten- 
acre, and more sloping field, where the sewage was better dis- 
tributed over the lower and further portions of the plots, and 
Avhich had been sewaged the year previously, and even early in 
1861, before the commencement of the experiments, the increase 
of green grass for each 1000 tons of sewage experimentally ap- 
plied was greater, amounting in each case to over 4, and in two 
out of the three, to nearly 5 tons. As an average of all the results 
obtained in the two fields, it may be stated, that the amount of 
increase of green grass yielded for 1000 tons of sewage applied 
was, in this first year of the experiments, equal to only about 
three-fourths of a ton of hay. 
" II. Results of the Experiments vnth Oxen. 
" Ten Hereford oxen were tied up in a shed ; two to be fed 
on unsewaged grass, and the remaining eight to receive sewaged 
grass, as it was ready to cut, indiscriminately from the three 
plots in the five-acre field, to which sewage was to be applied 
respectively at the rate of 3000, 6000, and 9000 tons per acre 
per annum. The animals had the grass alone for a period of 
16 weeks ; namely, from INIay 27 to September 16. They had 
then, for a further period of four weeks, in addition to the grass, 
4 lbs. of oilcake per head per day. 
" The average results over the whole period during which the 
oxen had grass alone, are given in the following Table (IV.), and 
to these the few comments that it is necessary to make Avill be 
confined. The points shown are, the quantities of sewage de- 
signed to be applied, and the quantities actually applied on each 
plot up to the end of October ; the average amounts respectively 
of unsewaged and of sewaged grass consumed per head daily ; 
the number of weeks the produce of each acre would keep one 
ox ; the pounds of increase in live-weight that the produee of 
each acre would yield ; the value of the increase in live-weight 
from each acre, at 4rZ. per lb. ; and the value of tlie increase in 
live-weight obtained from the increase of produce yielded for 
1000 tons of sewage applied. 
" The oxen weighed more per head than the experimental 
cows, but their daily consumption per head both of unsewaged 
and of sewaged grass was considerably less. It is (juite obvious 
from the results given in the Table that grass of the description 
in question is not adapted for the fattening of oxen without the 
addition of other food. Indeed, one of the animals on the sew- 
aged grass weighed 52 lbs. less at the conclusion than at the 
commencement of the experiment ; and the maximum increase 
