76 
Utilisation of Town Sewage. 
sewage. Like the oxen, the cows received grass alone for a 
period of 16 weeks, after which they had a similar addition of 
oilcake for a period of four weeks. 
" Attention will here be confined to the average results oA'er 
the period of 16 weeks, during which the cows were fed on grass 
alone. These are given in the following Table (V.), which 
shows the particulars of the sewage applied to each plot ; the 
average quantity of unsewaged and of sewaged grass consumed 
by each cow daily ; the average yield of milk per head daily ; 
the number of weeks the produce of the respective acres would 
keep one cow ; the number of gallons of milk the produce of 
each acre would yield ; the gross value of the milk from each 
acre at 8d. per gallon ; and the value (at the same rate) of the 
milk obtained from the increased produce of each 1000 tons of 
sewage applied. 
" Table V. — Showing the Piesults of the Experiments with. Cows when fed on 
Green Grass alone. 
Season, 1861. 
Unsewaged 
Grass. 
Sewaged Grass. 
riot 1, 
Plot 2. 
riot 3. 
I'lot 4. 
Tons of sewage to be applied perl 
Tons of sewage required to end) 
Tons of sewage actually appliedl 
,. 
' ■ 
3000 
1769 
1387 
GOOO 
3538 
2804 
9000 
5308 
42 2G 
Grass consumed per head daily lbs., 150-2 
Average yield of milk per head) 24-89 
1 
Weeks the produce of each acre |! jg.g 
would keep one cow .. ..)] 
Gallons of milk the produce ofr 30^.4 
each acre would yield . . . . ) 
Value of milk from the produce r JC. s. d. 
of each acre at 8'/. per gallon /, 10 14 3 
Value of milk from the increased) | 
produce of 1000 tons sewage J j 
124-0 
20-53 
40-9 
570-7 
£. s. d. 
19 0 6 
5 19 10 
58-8 • 
820-4 
£. s. (/. 
27 C 11 
5 18 8 
GS-9 
961-3 
£. s. d. 
32 0 10 
5 0 11 
" As already stated, the produce of the three acres of sewaged 
grass was given to the cows indiscriminately, as it was ready ; 
as, to have done otherwise, on the assumption that the milk- 
yielding quality of the grass obtained from the land receiving 
different quantities of sewage was weight for weight different, 
■would greatly . have complicated the experiments without the 
probability that the results could be taken as indicating, with 
