Dog 2, 7 kilos; ether anesthesia; syringe method; trikresol serum and formaldehyde serum.

Dog 4, 12.56 kilos; ether anesthesia; syringe method; trikresol serum (0.5 and 0.3 per cent).

Dog 7, 10.4 kilos; ether anesthesia; syringe method; trikresol serum (0.5 per cent) and formaldehyde serum (1:1000).