1. Adams, E. 1978. Invertebrate collagens.Science 202:591?598.
2. Arnold, S.J. 1981. The microevolution of feeding behavior, pp. 409?453,in A. Kamil and T. Sargent (eds.). Foraging Behavior: Ecological, Ethological, and Psychological Approaches. Garland STPM, New York
3. Blight, E.G., andDyer, W.J. 1959. A rapid method of total lipid extraction and purification.Can. J. Biochem. 37:911?917.
4. Burghardt, G.M. 1969. Comparative prey-attack studies in newborn garter snakes of the genusThamnophis.Behaviour 33:77?114.
5. Burghardt, G.M. 1970. Chemical perception in reptiles, pp. 241?308,in J.W. Johnston, Jr., D.G. Moulton, and A. Turk (eds.). Communication by Chemical Signals. Appleton-Century-Crofts, New York.