^02 History of the Art of Dyeing. 



3. It has every advantage which may be attributed to 

 Boulton and Watt's engines, by condensing out of the re- 

 ceiver, either in the penstock or at the level of the vj^ater. 



4. Another very great advantage is, that the water in the 

 upper part of the pipe adjoining the receiver acquires a heat, 

 by its being in frequent contact with the steam, very nearly 

 equal to that of boiling water : hence the receiver is always 

 kept uniformly hot, as in the case of Boulton and Watt's 

 engines. 



5. A very small stream of water is sufficient to supply this 

 engine, (even where there is no fall,) for all the water raised 

 by it is returned into the reservoir HHH, 



From the foregoing reasons it manifestly appears, that no 

 kind of steam-engine is so well adapted to give rotatory mo- 

 tion to machinery of every kind as this. Its form is simple, 

 and the materials of which it is composed are cheap ; the 

 power is more than equal to any other machine of the kind, 

 because there is no deduction to be made for friction, except 

 on account of turning the cocks, which is but trifling. 



Its great utility is therefore evident in supplying water for 

 every kind of work performed by a water-wheel, such as grist- 

 mills, saw-mills, blast-furnaces, forges, &:c. 



XXXIX. History of the Art of Dyeings from the earliest 

 Ages. By h N. Bischoff. 



[Concluded from Page 217-3 



If the history of dyeing in the former period appears im- 

 perfect and deficient, it will be found still more so in the 

 present one, which contains an account of the state of it in 

 the west after the fifth century. And, indeed, it needs 

 excite no wonder if great silence prevails respecting an art at 

 that time so little valued, as we are left in much uncertainty 

 in regard to many other things of great importance. This 

 much, however, we know, that during the general banish- 

 ment of the sciences, aits, and manufactures from the west, 

 in consequence of the incursions incessantly made by multi- 

 tude's of barbarians and warlike nations, that of dyeing was 



among 



