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The paper presents comparison between the associations of British and American voluntary associations. The development of postwar research on the structure and functioning of voluntary associations has been uneven, and there have been marked differences between British and American research in this field. This paper offers a narrow definition of voluntary associations. It defines voluntary associations as groups in which membership is in no sense obligatory, which have a formal constitution, but which do not have paid officials at the local level. The next section of this paper places the subsequent analysis in context by pointing briefly to the very substantial similarities between research in Great Britain and the U.S. The third section discusses differences in the research environments of the two countries, and suggests their relevance to the main problem. The fourth section assesses the differences in research orientations between the two countries, as it has influenced the study of voluntary associations. The final section considers the effect of these differences upon the functional analyses that have been made.

The article presents the research paper which reflects on methods used by the Freshwater Biological Association to reduce the number of pike in Lake Windermere, England. Pikes reduced the food for the trouts, which are the most important fishes in the lake. The study found out that the long lining method caught more pikes but also eels and trout which could not be returned alive.

The article presents reports of combined Annual Meeting of Canadian Academy of Endodontics and the American Association of Endodontists. The first day of the meeting featured the research seminar. The first paper was on a study concerning "Change in Dentine Brittleness Relative to Dehydration," by Douglas Stewart and Herbert Schilder of Boston University. Again from Boston University, Herbert Schilder and Roger Czarnecki reported on a "Histological Evaluation of the Human Dental Pulp in Teeth with Varying Degrees of Periodontal Disease."