Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture
(Pretoria : Government Printing and Stationery Office, 1908)
Conclusions:
(1) The inoculation of animals with horse foal blood of 1st, 2nd and 3rd generations caused a mortality of 7 out of 186, or 4 per cent.
(2) The inoculation of animals with horse foal blood of 4th, 5th, 6th, ...