78 GEOLOGY. 



Discusses the rolativo ages of these rocks. The writer believes that 



a series of special eruptions more extensive than those of the granitoid 



porphyry itself took place during the deposition of the " anthraciferous 



grits" of lloanne, and that they brought to light rocks having a por- 



phyritic paste, of which there were none, properly speaking, in the 



granitoid porphyry. Gr. A. L. 



Leymerie, a. Note 1° sur les terrains superieurs de la Montagne- 



Noire ; 2° sur I'ensemble des depots supra-nummulitiques du bassin 



de Carcassonne. [1. Upper Bods of the Montagne-Noire; 2. Supra - 



nummulitique deposits of the Carcassonne Basin.] Bull. See. Geol. 



France, 3 ser. t. ii. pp. 68-80, plate iv. 



1. A brief description of the relatively recent beds resting unconforma- 

 bly on the deposits at the foot of the southern flank of the Montagne- 

 Noire ; these beds have a low dip, and have probably not been disturbed 

 since their deposition. The author divides them into two groups, as 

 follows : — Eocene, Carcassian, lacustrine, and Nummulitic Beds, marine ; 

 Cretaceous, Garumnian, lacustrine. 



2. A detailed description of the upper lacustrine series named ^' Car- 

 cassian " by the author. G. A. L. 



. De I'age et de la position du marbre de Saint-Beat (Haute- 



Garonne), [Age and position of the marble of Saint-Beat.] Compt. 

 Eend. t. Ixxviii. pp. 1629-1635. 



This marble had hitherto been regarded by geologists as a metamor- 

 phosed Secondary Limestone. The author believes it to be pre-Carbo- 

 niferous, and to belong to the same series as the Limestone of Labourd 

 rather than to that of the Laruns Limestone, which has been shown by 

 fossil evidence to be Carboniferous. The relation of the rock to the 

 neighbouring granite and its lithological characters chiefly led the 

 author to his conclusion, which he does not, however, hold to be 

 thoroughly established. G. A. L. 



. . Keponse a une critique de M. Garrigou, contenue dans une 



Note recente, intitulee " Calcaire carbonifere des Pyrenees ; marbres 

 de Saint-Beat et du Mont." [Beply to a criticism by M. Gar- 

 rigou, see p. Q^.'] Compt. Rend. t. Ixxix. pp. 145-148. 

 The author denies the correctness of M. Garrigou's reference of the 

 St.-Beat marbles to the Carboniferous Limestone, and persists in his 

 opinion that they are pre-Carboniferous. G. A. L. 



Llebisch, Tn. Die in Form von Diluvialgeschieben in Schlesien 

 vorkommenden massigen nordischen Gesteine. [Boulders of 

 northern rocks in Silesia.] Pp. 39. 8vo. Breslau. [Noticed in N. 

 Jahrb. 1875, p. 322.] 



Notices that many crystalline rocks have been found as boulders in 

 Silesia. 



LiNDER, — . Observations sur les depots tertiaires du Medoc et du 

 Blayais dans le dcpartement de la Gironde. [Tertiaries of part of 

 the Gironde.] Bordeaux. 



