Report on a Manuscript Work of M. Andre. 319 



curious; in the Alps there are longitudinal and transversal 

 valleys ; in Jura these are almost all longitudinal ; in the 

 Vosges almost all are oblique. We knovy that the Pyrenees 

 have a fourth structure, and that the vaile) s there are very 

 nearly all perpendicular. The Vosges are singular for the 

 quantity of gres and of puddingstone, which cover their 

 isolated summits, and which appear to be the vestiges of an 

 immense platform. 



From these details it will appear that M. Andre has care- 

 fully observed the countries over which he has travelled, that 

 the facts which his work contains may be very valuable to 

 positive geology, at least in what relates to the mineral 

 masses; and although he was not particularly occupied with 

 the fossils, we consider that he must take, in this respect, 

 a distinguished rank among observing geologists. 



To his own descriptions of the countries which he visited, 

 he has added several extracted from the best authors, such 

 as Saussure, Deluc, Dolomieu, Ramond, and Patrin, on 

 those which he has not seen. Hence the author infers, that 

 there must be a great analogy between distant regions, and 

 that the theories applicable to these countries must be 

 nearly so to the whole earth. At the conclusion he says 

 something of fossils, but solely after other naturalists. 

 Having thus established his data with great care, either from 

 his own observations or from the most respectable authori- 

 ties, M. Andre proceeds to the consequences which he 

 thinks must result from those different facts. After what 

 we have said at the commencement of our report, it will not 

 be expected that we should pronounce judgement on this 

 part of the work ; but we shall not abstain from giving an 

 idea of it. 



He thinks that the actual arrangement of the surface of 

 the earth has not existed from a very remote epoch, and he 

 endeavours to prove it, like MM. Deluc and Dolomieu, by 

 the progress of depositions (cboulemens), and by that of de- 

 composition and formation of soil {atterUsemens). ile like- 

 wise thinks that this arrangement is totally owing to a cause 

 unique, general, uniform, violent, and prompt ; and ap- 

 pears to attribute to this cause even the transpur t of foreign 

 2 fossil#. 



