Mineral Spring. — Architecture, 65 



commerce. Their more immediate objects are the extirpation 

 of idolatry amonj!: the inliabitaiits, and the establishment of pre- 

 cautions against tlie rava'res of fire. 



Mineral water of Roisdorff, a village about a league from the 

 Rhine and four from Cologne. ' M. Petazzi has analysed this 

 v,-ater, which rises in a well above 17 feet deep and 5 wide, in an 

 alluvial soil mixed with blocks of trap, and gives the following 

 as its contents. In foiu- litres (about 8-4532 Englihli pints) he 

 found 2-:33.56 litres (or 160 English cubic inches) of carbonic 

 gas ; muriate of soda 4*206 grams, ditto of lime 0*337 ; sulphate 

 of soda 1-163, ditto of lime 0-217; carbonate of soda 3-544, 

 ditto of lime 0-326, ditto of magnesia 2-809, and silica 0-043. 

 Total 12-705 grams, or I9G-216 English grains of sohd matter. 

 Its specific gravity to distilled water is as 1'00S9 to 1-0000. The 

 analysis was made when the water vyas at 8^ degrees of the cen- 

 tigrade thermometer, that of the air being 12°. The spring is 

 within 80 feet of a well of pure water, and about 160 fiom a 

 strong chalybeate one. 



Literature and the Sciences have been cultivated in Poland 

 notwithstanding the occurrences of the last year. Count Siera- 

 kowsky has published at Cracow a magnificent work on Archi- 

 tecture, i!i two volumes folio, one of which is fidledwith plates. 

 It i-* written in the Polish language, and the periodical works 

 pii))lished in Poland sjjcak of it in the following terras : " Ar- 

 chitecture has been studied by various Polish authors; but none 

 of their works have been brought to a conclusion, because the 

 printing of them has been constantly interrupted by the mis- 

 fortunes of the country. A short time previous to the last par- 

 tition of the kingdom. Count Stanislas Potocki had formed an 

 Architectural Society, with the view of publishing a Polish work 

 en architecture, and Count Sierakowsky was a member of that 

 society ; but at the period above alluded to the project was 

 abandoned, and the society dissolved. The latter nobleman, 

 however, persisted singly in collecting materials ; and the work 

 he ha'' now published is the result of twelve years labour and 

 personal sacrifices, having published it at his own expense. It 

 is divided into three parts : the first part treats of beauty, the 

 fiecond of convenience, and the third of the construction of 

 buildings public and private. The author, having formed his 

 taste in Italv, has introduced into the second volume, which 

 consists entirely of plates, drawings of the finest public buildings 

 in Rome, such as the Circus Maximu'^, &c. In short, the work 

 embraces every department of architecture from the cottage to 

 the palace, and from the cistern and the ice-house to the acjue- 



Vol.44. No. 195.^«/y KM4, E duct. 



