A total of 30 skulls were used in this study with the aim of determin ing their cranial capcity and inturn the normal brain size. Of these skulls 15 came from sheep and the rest from goat. The average cranial capacity of the sheep was 122.15 and the goat was 95.85 ml. For estima tion of the cranial capacity formula from the external skull measurements in the sheep and goat, the Stepwise multiple regression equations which gave a closer estimate as compared to the actual cranial capacity values were computed.
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