UEPORT OX MIXKRAL AND THERMAL WATERS. 77 



condition in which the sulphureous principle of these waters 

 exists, and that peculiar organic matter which is associated with 

 the waters. 



Having already commented upon these points, I need only 

 further remark, that I consider the work in general a most va- 

 luable addition to our knowledge. 



M. Longchamp, who was expressly engaged by the late French 

 Government to examine the mineral waters of that country, has 

 completed his report on those of Vichy*, which appears to be 

 drawn up with considerable care, but has been arrested in the 

 further prosecution of the design by the overthrow of the Bour- 

 bon dynasty. In a little wurk, entitled " Annuaire des Eaux 

 Min&ales" for 1831, he has given a sketch of the principal 

 springs of the Pyrenees and of others in France, which may be 

 consulted to advantage. 



The work of Alibertf , though it bears the name of a distin- 

 guished medical writer, is evidently designed ps a popular com- 

 pendium, and therefore hardly comes under review on the pre- 

 sent occasion ; nor am I aware of any other work of scientiBc 

 interest on this subject, that has recently appeared in the French 

 language. 



In Germany works on mineral waters abound ; but perhaps 

 the most important is one published by Professor Bischof % of 

 Bonn in 1826, relative to the mineral springs of the Rhine 

 province and others of similar constitution, replete with valuable 

 information, and important general views. 



In criticising some of the latter, I have all along been con- 

 scious of the risk I incurred of being myself in error; nor should 

 I, perhaps, have been tempted to question them, had it not ap- 

 peared to me, that inferences deduced from one particular class 

 of mineral waters, ought to undergo the test of a severe scrutiny, 

 before we permitted ourselves to apply them to the springs of 

 other and distant regions. 



Brandes §, with the assistance of Kruger, has published a very 

 elaborate account of the waters of Pyrmont, and more recently 

 a still larger work on those of Meinberg||, containing, not only 

 a detailed description of the spring, hut also of the topography, 

 antiquities, and natural history of the neighbourhood. 



But it would be endless to enumerate the various works on 

 particular mineral waters, which have issued from the German 



* Analyse des Eaux Minirales de Vichy, 1825. 



+ Precis Historique sur les Eaux Minerales. 1826. 



I Die VulkanischenMineralquellenDeiitschlands vndFrankreichs. Bonn, 182G. 

 § Beschreibting der Mineralquellen zu Pyrmont. 1826. 



II Miner alqnellen zu Meinberg. Lemgo, 1832. 



