Using scanning electron microscope techniques, the author examined the succession of microorganisms which constitute the marine microfouling community in Monterey Harbor, California, upon stainless steel substrates. He found that solitary diatoms appeared during the first 4 hours and became numerous by 48 hours of immersion. They were followed by colonial diatoms which appeared during the first 24 hours and by hydroids and bryozoans during the first 96 hours. Bacteria first became evident upon substrates which had been immersed for 48 hours. A well-established community, including, metazoa, and many unidentified forms was formed during the first 3 weeks of immersion. Observations of microfouling upon aluminum, brass, and copper substrates were obscured by the formation of a thick crust, possibly of corrosion products.

Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 22 (thesis year 1977) a total of 10,658 theses titles from 28 Canadian and 227 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. While Volume 22 reports theses submitted in 1977, on occasion, certain universities do report theses submitted in previous years but not reported at the time.