488 Report uii the Exhibition and Trial of Implements 
5. Pifjs were found to store up 4 to 5 times as much fat as 
was supplied ready formed in their food. If the produced fat 
were formed from starch, about 2h parts would be required for 
the formation of 1 part of fat. If the fat were so formed, about 
one-third of the total dry substance of the fattening food would 
contribute in a pretty direct manner to the formation of about 
half that amount of dry increase. In the sense here supposed, 
only about two-thirds (instead of 82 to 85 per cent.), of the dry 
substance of the food, would be expired, perspired, or voided, 
without directly contributing to increase. 
The comparative values of our current fattening food-stuffs, as 
a source of saleable animal increase, depend more on their amount 
of digestible and assimilable ?zoM-nitrogenous, than on that of the 
nitrogenous constituents. But, as a source of manure, their value 
will be the greater, the higher their proportion of nitrogenous 
compounds. 
XXIV. — Report on the Exhibition and Trials of Implements at the 
Canterbury Meeting. By H. B. Caldwell, Acting Senior 
Steward. 
It seems to me that when the Royal Agricultural Society has 
been in existence upwards of twenty years, the Senior Steward 
ought to be able to write a lengthened account of its progress and 
success — nor would this be a difficult task ; but on taking into 
consideration that all my information must be derived from the 
Reports contained in i'ormer numbers of the Journal, to which 
every member of the Society has equal access with myself, I 
purpose to confine my remarks to the Canterbury Meeting. I 
much regret that this Report must necessarily be defective, in 
consequence of my being compelled by illness to leave Canter- 
bury before the trials of Implements were completed. Under 
these circumstances I find it impossible fully to detail the various 
incidents of the Meeting, but I shall make some remark on those 
])oints which seem to me to call for special notice. 
I ought first to mention the beautiful situation of the show- 
yard, its convenient distance from the town, as well as its 
proximity to the trial fields, which themselves lay well together. 
These advantages were duly appreciated by judges and 
officials, who, like myself, have at many previous Meetings 
been walked off their legs in passing from field to field. More- 
over the land itself was well selected for the purpose of testing 
steam-cultivation, comprising various descriptions of ground, 
rough and smooth, flat and hilly, as is well described by the 
