Experiments in the Dairy. 
151 
of milk, a practice allowed by the Legislature so long as the 
colouring matter is not injurious to health. 
Two samples of milk were taken, the one from the milk of 
the Jersey cows, the other from the palest milk I could 
obtain from another breed of cattle. 
The values of the two milks, if bought for a factory, on the 
fat present in the milk, would be respectively about Is. and. 9c?. 
per gallon, the butter ratio working out in the one case under 
2 gallons and in the other nearly 3 gallons. 
Eight small 4-ounce bottles were filled with the milk 
as below. 
2 with the Jersey milk, labelled No. 1. 
2 with the white milk, labelled No. 4. 
2 with the white milk coloured to represent the Jersey, 
labelled No. 2. 
2 with the white milk coloured deeper than the Jersey, 
labelled No. 3. 
Four of these bottles (i.e., one set of each of the different 
samples) were put on ice to allow the cream to rise, and these 
were covered over with muslin in the Dairy to prevent them 
being seen by any one. The other four samples were kept 
warm and shaken occasionally, so as to prevent the cream 
rising. 
On several occasions during the three days that this 
experiment was carried out I handed round the four bottles 
containing the warm milk amongst the public, who were 
watching the proceedings in the Dairy, with a request that 
they would give their opinion on the different samples by 
holding up their hands as I called out the numbers on the 
bottles, and keeping them up while I counted them. I 
explained that all the samples were pure, but that, as a matter 
of curiosity, I was anxious to find out whether they (the 
audience) knew the value of milks from the purchasing point of 
view. 
On every occasion No. 3 sample secured the most votes, 
while No. 4 received none at all. A very few voted for 
Nos. 1 and 2, opinions between them being pretty equally 
divided. 
After the bottles were returned to me I told the audience 
what each bottle contained, and how it had been treated, and 
then handed round the four bottles in which the cream had 
risen. 
I took pains to explain that the colouring of milk was 
allowed so long as the colouring-matter was not injurious 
to health, but I also recommended that in purchasing milk 
a guarantee should always be obtained from the vendor that 
the milk sold was not coloin-ed, 
