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INTRODUCTIONThe catching of crows, Corvus spp., can be a time consuming and expensive process (Rowley 1968), and during a study of the social behaviour of the Rook Corvus frugilegus ringing and wing-tagging of large numbers of this species was necessary. Several trap designs were tried and a cheap, effective one developed which could be of use to ringers. This paper investigates the effects of seasonal factors and design of the trap on trapping success. Over 500 Rooks were caught over two years, and the results of morphometric analysis are given and discussed. All trapping was done within 100 m of a rookery situated 20 miles south of Edinburgh in the Borders Region of southern Scotland, 55°44'N., 2°54'W.

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Three cases of chlorpropamide overdose are reported. Plasma levels of chlorpropamide, diazoxide, glucose, and insulin are presented for each patient during treatment. The simultaneous analysis of chlorpropamide, hydrochlorothiazide, and diazoxide in plasma by high pressure liquid chromatography (HPLC) is also reported. Although all three cases presented at hospital with potentially lethal plasma levels of chlorpropamide, each was successfully treated with intravenous diazoxide and glucose. Plasma diazoxide concentrations between 50-100 microgram/mL appear to be optimal in achieving therapeutic control of chlorpropamide induced hypoglycemia.