A review is given of the physical features of three coastal environments of eastern Canada: the Gulf of St. Lawrence, the open Atlantic coast, and the Bay of Fundy. Intertidal and sublittoral regions of these environments ...

After brief comparison of ventilation schemes used in three long European tunnels, several possible methods of ventilating a 13 km submarine vehicular tunnel are examined. Probably the most suitable is one supplying fresh ...

Chemical methods that have been used to obtain axenic algal cultures are reviewed. The methods include the use of antibiotics, hypochlorite, iodine, hormones, phenol and detergents singly or in combination. Data are given ...