Swedes raised upon barren Land with artificial Manure. 3G1 
s. d. 
The Nitrogen in this manure, according to Bous- 
singault, ' Economic Rurale,' tome ii. p. 148, is 1 
and one-tenth per cent, nearh', or in the above 261 
lbs. will amount to 2j lbs. nearly, which, at Id. per 
lb. (its value when bought in good guano or sulphate 
of ammonia) . . . . . . . 1 71 
The ash, considering how large a proportion consists 
of potash and soda, &c., may fairly be estimated at 
Urf. per lb., or 19 lbs. . ' . . .2 4^ 
Nitrogen, as above . . . . . . \ 1\ 
3 111 
This being added to 1 7s. 6d. per ton as the value of the bulbs esti- 
mated by the amount of mutton they will produce, gives 1/. Is. 3|rf. as 
the whole value of a ton of swedes consimied in the manner and under 
the conditions of the experiment. 
XXXI. — On the Breeding, Feeding, and General Management 
of Sheep. By T. E. Pawlett. 
It is not my intention, Jn offering the following pages to the notice of 
your Society, to enter into a lengthened discussion derived from 
a speculative knowledge of the subject in question, but I shall en- 
deavour to confine myself chiefly to the relation of experiments 
which have been made and tested by myself, offering at the same 
time such remarks and observations as may have occurred to me 
whilst they were in progress : and here I may observe, that the trial 
of any of them was not left to the care of another person, but all were 
begun and carried on under my own eye, as far as circumstances 
would allow. It has been my practice for more than twenty years 
to weigh some of mv sheep monthly, almost all the year round, to 
try various kinds of food and methods of management, and always 
in the most accurate manner, bv using dead weights, and not upon 
the steelyard principle, which, by weighing anything alive, is liable 
to great variation. For instance : if I were to weigh a lot of lambs 
alive, which I frequently have done with the common steelyard, 
by taking two saddle-girths, and placing them under the belly of 
the animal, one as near the hind legs as possible, and the other 
immediately behind the fore legs, and so when the steelyards were 
attached to the girths, suspending the lambs from a pole rest- 
ing upon the slioulders of two men, I have invariably found that 
they would weigh by this method from 3 lbs. to 4 lbs. each more 
than they afterwards have done (on the same day) by scales and 
