- 5 - 
Harshbarger, J. C., Chang, S. C., and Otto, S. V. Chlamydiae (with Phages), 
Mycoplasmas, and Rickettsiae in Chesapeake Bay Bivalves. Science. (In 
press). 
Rose, F. L. and Harshbarger, J. C, Neoplastic and Possibly Related Skin 
Lesions in Neotenic Tiger Salamanders, Ambystoma tlgrinum , from a 
Sewage Lagoon. Science. (In press). 
SELECTED OTHER ACTIVITIES IN 1976 
1. Convened a symposium on invertebrate tumors at the Annual Meeting of 
the Society for Invertebrate Pathology, Kingston, Ontario, Canada, 
August 1976, and co-authored one of the presentations at that symposium. 
2. Served as Secretary of the Society for Invertebrate Pathology until 
August 1976 and subsequently as a member of the Permanent Program 
Committee. 
3. Served as Secretary of the Washington, D.C. Chapter of Sigma Xi, The 
Scientific Research Society of North America. 
4. Served as a member of the Planning Committee, as a Session Chairman, 
and as a speaker at the New York Academy of Sciences Conference en¬ 
titled; ’’Aquatic Pollutants and Biological Effects with Emphasis on 
Neoplasia,” held 27-29 September 1976. 
5. Served as a member of the Committee on Animal Models and Genetic Stocks 
of the National Research Council of the National Academy of Sciences. 
6. Served as a member of the Interagency Collaborative Group on Environ¬ 
mental Carcinogenesis (chaired by H. F. Kraybill of the U.S. National 
Cancer Institute). 
7. Participated in a cooperative investigation of the etiology of several 
diseases in bivalve mollusks, supported in part by the U.S. Food and 
Drug Administration, which has resulted in the discovery of chlamydiae, 
mycoplasmas, rickettsiae, and polyoma viruses in these animals. 
8. Made a field survey of fish collected from nine sites on the Ohio River 
and one site on the Kanawha River, for tumors, as part of the annual 
fish survey conducted by the Ohio River Valley Water Sanitation Com¬ 
mission. 
PERSONNEL 
The Project Officer for the contract is Dr. Clyde J. Dawe, Head, Com¬ 
parative Oncology Section, Laboratory of Pathology, National Cancer Insti¬ 
tute, National Institues of Health, Bethesda, Maryland, 20014. 
The Principal Investigator for the contract is Dr. W. Duane Hope, 
Chairman, Department of Invertebrate Zoology, National Museum of Natural 
