Bowhead whales (Balaena mysticetus) summering in the eastern Beaufort Sea in 1983 were measured through aerial stereophotogrammetry. Photos were taken from a turbine Aerocommander 690 with wingtip-mounted, calibrated 35-mm cameras. Photos were measured on an analytical plotter with scale data provided by radar altimeter and focal length of the lenses. Coefficient of variation of known-sized tar...

Rising magnetic flux loops in the solar convection zone develop an asymmetric shapewith a flat preceding part and a steeper following part with respect to the direction of solar rotation. By a statistical analysis of newly forming sunspot groups we test the conjecture that this geometrical asymmetry leads to an asymmetric distribution of secondary spot groups originating from the legs of the sa...

A new species of the Oriental genus Letana, Walker (Orthoptera: Tettigoniidae: Phaneropterinae), proposed as Letana dentata sp. nov., collected from the North-eastern province, Meghalaya, India (Ri bhoi 90°55'15 to 91°16' latitude and 25°40' to 25°21' longitude, 993 MSL), is described together with the morphological characterization of eight reported species. Of these, Letana rubescens (Stål, 1...

China, a country that occupies a vast territory with a diverse climate, varied topography and great variety of flora and fauna, is situated in the southeastern Asia. Its land extends from longitude 73 0 E to 135 0 E, a stretch of over 3,200 miles. From north to south, it spans from latitude 53 0 N to 4 0 N, covering a distance of 3,400 miles. The varied climate crosses frigid, temperate, subtro...

Source locations and depths to magnetic contacts were estimated from the total intensity magnetic field of an area of 3,025.25 square kilometres on geographical latitude N o ' 00 7 to N o ' 30 7 and longitude E o ' 00 3 to E o ' 30 3 within Abeokuta area, using local wavenumber method. This study was carried out using digitised airborne magnetic data of basement complex formation. Structural in...