W^ Scientific Intelligence. — Geology. 



5. Phospfiorus in Kelp. — Repeated trials, we are told, by 

 Von Mons, have proved, that the roundish and longish veins 

 found in the varec-soda or kelp, after the removal of the matter 

 soluble in water has been removed, are principally composed of 

 phosphorus. 



GEOLOGY. 



6. Geogfiosdcal Structure of' the Country around Darwar. — 

 " The following geological fact is curious, whether new or not. 

 The eastern part of this country, which we call theDooab, is com- 

 posed of granite, which is succeeded to the westward by an im- 

 mense series of schists, extending the whole way to the sea. But, 

 between the granite and the schists, is a considerable tract of 

 country, consisting of what I would call pseudo-granite, which 

 is the debris of the original granite, again consolidated. It is 

 composed of felspar, quartz, and mica ; the grains of which are 

 not angular, like fresh crystals, but are rounded by attrition ; 

 and I have a specimen with an imbedded mass of felspar about 

 the size of a pigeon's eg^, completely worn into a round ball. 

 From this description, you cannot doubt that this is not original) 

 granite. And now for my curious fact : This consohdated de- 

 bris is almost every where intersected by small veins of quartz, 

 or of quartz and felspar mixed. Nor have these veins origina- 

 ted from subsequent eruption ; for they intersect one another in 

 all directions, and often terminate in two ends, in a small por- 

 tion of rock. Moreover, this rock often displays, in a slight de- 

 gree, a schistose structure, especially when acted on by the 

 weather. There are a number of masses of original granite im- 

 bedded in this consolidated debris ; and, in those places where 

 the latter displays the schistose structure, the imbedded masses 

 have the schistose consolidated debris; or, if you please, the 

 pseudo-granite, surrounding it like concentric lamellae. These 

 facts appear to prove, that a new arrangement of particles may 

 take place in solid bodies, giving rise to crystallization, and to 

 different kinds of structure in rocks. There is a curious fact 

 mentioned by Dr Clarke, in his Travels in Greece, which strong- 

 ly confirms this opinion, viz. that the enormous stalactites in the 

 Grotto of Antiparos, which have been formed by the gradual 

 deposition of lime-water, offer concentric layers only towards 

 their superficies, their interior structure exhibiting a complicated 



