Milk and Butter ' Tests at the Bristol Show , 1913. 267 
regulate the position of the incandescent zone and ensure the 
gasification of the tarry matter. 
Road Rollers seem to be still driven, as a rule, by steam ; 
of seven makers who exhibited only one shows motor driven 
rollers, and for the 10 ton size the price is a good deal more 
than that for steam. Messrs. Barford & Perkins show no fewer 
than 5 motor rollers of different sizes and weights, the smallest 
for agricultural purposes weighing 33 cwt. and costing 190Z. 
Motor Vans and Lorries are rapidly increasing in number 
for medium and light weights, but steam is likely to hold 
it’s own for Road Rollers and heavy Lorries for a long time 
to come. 
One of the best stands was that of the Associated Portland 
Cement Manufacturers, where machines were shown in action 
making concrete articles, from building blocks to drain pipes. 
There were many examples of articles for estate use moulded 
in quite simple home made moulds. 
In concluding this short report the Judges wish to thank 
the Stewards, Mr. F. S. W. Cornwallis and the Hon. J. E. 
Cress, for their assistance, and Mr. F. S. Courtney, M.Inst.C.E., 
the Consulting Engineer, for his technical advice. 
Harry W. Buddicom. 
Estate Office, 
Penbedw, 
Nannercb, Mold. 
MILK AND BUTTER TESTS AT THE 
BRISTOL SHOW, 1913. 
I.— MILK-YIELD TRIALS. 
The prizes offered in the Bristol Schedule for Milk-yields were 
confined to pedigree cattle of their respective breeds, thus 
reducing the classes to twelve as against thirteen at Norwich in 
1911, where Dairy Cattle were allowed to compete. 
The number of cows in these classes at Bristol showed a 
decrease as compared with Norwich, the Shorthorns, Red Polls 
and Dairy Cattle at that Show being 28, 19 and 5, as against 15, 
4 and 0 at Bristol, but with these exceptions the other breeds 
were well represented, the number of cows tested — 94 — being 
only exceeded at Norwich, since these classes were first started 
in 1906. 
The scale of points and the conditions under which the 
trials were carried out were the same as in 1911, the cattle 
being milked out on Wednesday, July 2, at 5 p.m., the milk 
for the next 24 hours being taken for these and the Butter Test 
