Discusses the optics of fly fishing, considering where to cast the fly once a fish is seen. Also considers what the fisherman looks like to the fish, examining refraction at a water surface, actual and apparent light rays, and how sticks in the water might look to a fish. (JN)

The Tenth Great Lakes Regional Meeting of the American Chemical Society met to assess current Chemical Research activity in the Great Lakes Basin, and addressed to the various aspects of the theme, Chemistry of the Great Lakes. Research areas reviewed included watershed studies, atmospheric and aquatic studies, and sediment studies. (BT)

This publication explains the Halliwick Method of swim instruction for people with disabilities. The Halliwick Method emphasizes independent functioning in the water, obtained through the development of control over body movements and establishing physical and psychological comfort. Containing over 75 photographs, including underwater shots, this…

Describes a learning package that develops an awareness of water pollution problems and of the complexity of their solution. (Author)

Discusses methods of utilizing waste heat from the increasing number of power stations. Possible uses include agri- and mariculture, centralized urban and industrial heating, and deicing of airports and marine facilities. (AL)

Cites legislation which was not implemented to prevent pollution of the New York Bight. Summarizes testimony heard by the Subcommittee on Air and Water Pollution, and subsequent political action. Discusses problems of implementing controls. (EB)

Examines some features of ice and snow that offer teachers and researchers help in understanding many aspects of igneous processes and configurations. Careful observation of such processes as melting, decay, evolution, and snow accumulation provide important clues to understanding processes by which many kinds of rocks form. (Author/JN)

Presented are the recommendations of the Water Pollution Control Federation for operation and maintenance consideration during the planning design, construction, and operation of wastewater treatment facilities. (CS)

Introduces science activities on water resources and how much water is available for consumption. (YDS)

One of the most important yet often overlooked uses of water is as a method of transportation or, navigation. Presents an activity to help students understand the importance of water as a critical, renewable, and natural resource for navigational use. Lists the learning objective, materials, and procedure for the activity. Also includes a foldout.…