•136 The American Xaturalut. [February, 



a series of beds in Mendoza', San Juan and La Rioja determined by 

 Prof. Geinitz as Rhfetic. 



These data are commented on by the Director of the Geological Sur- 

 vey of India to the effect that one of the chief points of interest in con- 

 nection with the discovery of Gondwana plants in Argentina lies in the 

 fact that we have au unquestionable lower carboniferous series (Reta- 

 mito) in the neighborhood of which (and probably unconformably to 

 it) a series of beds is found, which contains well known Lower Gond- 

 wana species of plants, thereby limiting the geological range of the 

 lowest beds of it, at all events to upper Carboniferous at must, which is 

 a further confirmation of the views generally adopted by the Geological 

 Survey of India. The genus Glossopteris proper is wanting, but the 

 other genera characteristic of that flora are present. (Rec. Geol. Surv. 

 Ind., Vol. XXVIII, 1895.) 



Geological News.— Paleozoic— From a petrographic study of 

 the igneous rocks near St. John, N. B., Mr. W. D. Matthew classifies 

 the Pre-Cambrian of that region as follows : A. Laurentian composed of 

 (1) Portland group and (2) Intrusive granite, B. Huronian composed 

 of (3) Coldbrook group, of volcanic rocks, (4) Coastal group, of volcanic 

 and sedimentary rocks, (5) Etchemiuiau or Basal Series, of sediu hi itarv 

 rocks, and (6) Kingston group, of metamorphosed volcanic.-. ( New- 

 York Acad! Sci. XIV, 1895.) 



Micsozorc. — In studying the fossils obtained by M. Gautier from 

 Madagascar, M. Boule comes to the conclusion that the Jurassic deposits 

 of eastern Africa and those of the western slopes of Madagascar appear 

 to have been laid down in a great interior sea, an Ethiopian Afediter- 



peninsula. 



Furthermore, that during the Upper Cretaceous there was land com- 

 munication between the African continent, Madagascar and Hindus- 

 tan. (Bull. Mus. d'Hist. Nat. Paris, 1895.) 



According to R. W. Ells, the whole range of North Mountain, which 

 euts off the valleys of Corn wall is: and Annapolis rivers from the Bay of 

 Fundy, is an overflow of igneus rock which has issued through a line 

 of fissure transversing the red Triassic beds, and is, therefore more re- 

 cent than the latter. At several places the trap is overlaid by newer 

 sedimentary beds of limestones and shales. No fossils have as yet been 

 found in these sedimentary strata. The author calls attention to their 

 importance and the desirability of a thorough exploration in order to 

 determine their age since they represent the highest group of stratified 

 sedimentary rocks in Eastern Canada. (Trans. Nova Scotian Inst. 

 Sci. Halifax, Vol. 1, 1894, p. 416.) 



