Le Petit and his associates (4) have reported a series of 86 cases in which they observed on the cathode ray screen pulsations which could be cinem~tographicalIy recorded. In our experience observation of the midline pulsations on the eRO is sometimes difficult because of rapid low amplitude fluctuations. The technique presented here makes possible the simultaneous presentation of electroenceph...

Un anneau est un ensemble A muni de deux lois de composition internes + et × telles que (A,+) est un groupe commutatif d’élément neutre noté 0 et la loi × est associative et distributive à gauche et à droite par rapport à +. Si × admet un élément neutre 1 on dit que l’anneau est unitaire. Si × est commutative on dit que l’anneau est commutatif. L’anneau des matrices d× d pour d ≥ 2 est unitaire...

The skull of a small, young adult grizzly bear was discovered in the course of archaeological excavation of an early historic Eskimo house in northern Labrador. This discovery confirms the rumoured presence of Ursus arctm in Labrador in the eighteenth and nineteenth centuries. It is suggested that the Labrador grizzly represents an eastward extension of the barren-ground grizzly population acro...