172 
The Milk-yields of Two Cheshire Herds. 
advised to examine the bark carefully, especially that of the younger 
twigs. The appearance of the scales, when once recognised, is so 
characteristic that they can scarcely pass unnoticed when vigorously 
searched for. 
The month of April is a very suitable period at which to resort 
to the remedial measures which the French investigators have found 
efficacious in Normandy, where apples are extensively cultivated. 
This brief note on Mytilaspis pomorum will, therefore, be in the 
hands of English apple-growers in time to suggest to them a means 
of coping with the pest during the current season. The interest 
concerned is a large one, for in 1892 the area of orchards in England 
was 203,520 acres, and in Wales 3,509 acres ; the largest county 
areas were 26,717 acres in Devon, 26,189 in Hereford, 24,094 in 
Somerset, 20,528 in Kent, 19,347 in Worcester, and 17,525 in 
Gloucester. After this there comes a fall to 5,134 acres in Corn- 
wall, but it should be remembered that apples and other rosaceous 
trees are also largely cultivated in kitchen gardens, in which situa- 
tions they are at once readily inspected and easily subjected to 
remedial treatment. 
The Apple Mussel Scale is closely allied to the White Woolly 
Currant Scale ( Pulvinaria ribesice, Signoret), which attacks all 
kinds of currant trees. Both insects are members of the family 
Coccidse, of the natural order Homoptera. 
W. Fream. 
THE MILK-YIELDS OF TWO CHESHIRE 
HERDS. 
The actual records, extending over a period of seven years, of the 
quantity of milk yielded by each cow in a dairy herd ought to afford 
some facts of practical interest to dairy farmers. Besides supplying 
useful data as to what may be regarded as maximum and minimum 
yields per cow, they should also furnish reliable information for 
arriving at what may be regarded as an average yield of milk per 
cow per annum. In this communication it is proposed to record 
the yields of milk obtained from each cow on the two home farms 
on the Duke of Westminster’s estate, Eaton, Eccleston, Cheshire, 
during the seven years, 1886-92. The system followed is to weigh the 
total milk of each of the two herds daily, whilst the milk of each cow 
is only weighed once a fortnight, an interval that has been found 
by experience to be quite compatible with accurate results. The 
records are tabulated on pp. 173 to 176, and are set forth in such a 
form that the reader will understand them at a glance. Where 
dashes are put opposite the number of a cow, it means that the 
animal was removed from the herd ’ in the following year a fresh 
cow takes her place. On p. 176 is given a summary of the seven 
years’ results, 
