Cited by Medicus, 'Notes for Novices: Cows' Milk for Puppies', Our Dogs 104 (3rd July 1936), p. 37.
Description:

'The following table shows the difference between cows' milk and bitches' milk:

   Cow... Total Solids, 13.5.. Fat 3.6.. Casein 5.5.. Milk Sugar 3.8

   Bitch... Total Solids, 22.8.. Fat 8.8.. Casein 11.6.. Milk Sugar 1.5

In order therefore to make cows' milk suitable for puppies, the following is a necessary mixture.

   Cows' Milk........ 15 oz.

   Casein.............. 2 1/4 oz.

   Cream.............. 2 1/4 oz.

   Water................ 5 oz.

Mix the casein into a paste with the water, then add the milk, stirring thoroughly. Put in enamel saucepan and bring gradually to the boil: biol for two minutes. Set aside to cool add the cream and stir well. That is a practical recipe which was printed in a recent issue of Chemist and Druggist, and it shows how easily the difficulty of feeding motherless puppies can be surmounted. It is hardly necessary to point out that the food should be fresly prepared. The above will make approximately a pint and a quarter. The liquids are meant to be in fluid ounces (measured), there being 20 fluid ounces in a pint.'