Utilisation of Town Sewage. 
73 
"Table III. — Sliowinp; tlio Quantities of vScw.igc applied up to the end of 
October, and the total Amounts of Green Grass obtained per Acre, &c. 
First Seasok, 1861. 
Sewage. 
Frodcoe. 
Quantities 
required. 
Quantities 
actually 
applied to 
cud of 
October. 
Total 
Green Grass 
per Acre. 
Increase of 
Green Grass for 
each 1000 tons of 
Sewage applied to 
end of October. 
Per 
Annum. 
To end 
of 
October. 
Five-acre Field. — Produce given to Oxen. 
Plot 1 (2 cuttings) . . 
Plot 2 U cuttings) .. 
Plot 3 (4 cuttings) . . 
Plot 4 (4 cuttings) .. 
tons. 
None. 
3000 
6000 
9000 
tons. 
None. 
1981 
3962 
5942 
tons. 
None. 
1872* 
4423 
6153 
tons cwts. qrs. lbs. 
9 5 3 5 
14 16 3 8 
27 1 0 10 
32 16 3 8 
tons cwts. qrs. lbs. 
2 19 1 7 
4 0 19 
3 16 2 0 
Half of ten-acre Field. — Produce given to Cows. 
Plot 1 (2 cuttings) .. 
None. 
None. 
None. 
8 
8 
0 
15 
Plot 2 (4 cuttings) . . 
3000 
1769 
1387 
15 
16 
3 
2 
4 
19 
3 
23 
Plot 3 (4 cuttings) . . 
6000 
.3538 
2804 
22 
15 
2 
12 
4 
18 
3 
23 
Plot 4 (4 cuttings) .. 
9000 
5308 
4226 
26 
13 
3 
12 
4 
4 
0 
20 
" The two fields were nearly a mile apart ; the five-acre field Avas 
nearly level, and the ten-acre one considerably sloping. When, 
in addition to these facts, the different previous treatment of the 
two fields, as already referred to, the different amounts of sewage 
actually applied up to the dates ending the experimental season, 
and the fact that the dates of the cuttings on the respective plots 
differed according to the amounts of sewage, and the consequent 
progress of the grass, are taken into consideration, it appears 
probable that the amount of produce would, under equal circum- 
stances, bear a very close relation to the quantity of sewage 
applied, pretty nearly up to the maximum limit contemplated. 
" The produce w ithout seAvage was, in each field, equal to more 
than tAvo and a-half tons of hay per acre. It Avas rather less in 
the ten-acre field than in the other ; OAving, doubtless, to the 
fact that the grass had there been fed doAvn so close in March, 
before the commencement of the experiment. 
" In the five-acre field the increase of green grass obtained for 
each 1000 tons of seAvage applied, was scarcely 3 tons, Avheie the 
application Avas at the rate of about 3000 tons per acre per annum ; 
* " In this case, the last cutting was on October 9, and the produce is, therefore, 
calculated against the sewage applied to the end of September only." 
