Abstract
Extract The object of this report is to record observations on the differences in incidence between Echinococcus granulosus and Taenia hydatigena in the livers of sheep of different age groups in New Zealand. The method of collection of data, examination, and classification of animals in these surveys have previously been described ( Gemmell, 1961a Gemmell, M. A. 1961a. N.Z. vet. J., 9: 29–29. [Taylor & Francis Online] [Google Scholar] , 1961b Gemmell, M. A. 1961b. N.Z. vet. J., 9: 37–37. [Taylor & Francis Online] [Google Scholar] ).