CATALOGUE, — PHILOSOPIiy AND AUTS, PRACTICAL MECHANICS. 159 



Enc. Br. Art. Printing press. 

 Rusher's patent types, lleperl. ii. I. 91. 



Musical Types. 

 Fournier's musical types. A. P. 1762. H. 



192. 

 Gando on printing music. A. P. 1763. H. 



134. 



Copijlng. 



Watt's patent for copying writings. Repert. 



I. 13. 

 Coquebert's simple method of copying. B. 



Soc. Phil. n. 50. Nich. 8. T 147- 



By putting sugar in the ink, and passing a hot iron over 

 unsized paper laid on the writing. 



Toplis's method of multiplying copies. Re- 

 pert. IV. 111. 



Printing ink is applied to the block, and the correspond- 

 ing parts of the impression remain white. 



Paper. See Union of^ Fibres. 



Bookbinding. 



Dudin Art du relieur doreur de livres. f. 



Par. 

 E.M. M. III. Art. Relieur. 

 Williams's patent for bookbinding. Repert. 



XLI. 89. 

 Palmer's patent for binding books, with 



hinges of metal. Repert. XIV. 305. 

 Unrolling old books. E. M. A. VI. 732. 



Statics. 



Effect of the Air. 



Fuss on the application of statics to geome- 

 try. N. A. Petr. 1793. XI. 220. 



Homberg on the difference of weight in the 

 air and in a vacuum. A. P. X. 257. See 

 Hydrostatics. 



Balances. 

 Lahire on balances. A. P. IX. 42. 

 Roberval's new balances. A. P. X. 343. 

 Illustrations of balances. Leup. Th. Slat. 3, 



6 . . 9. 

 Euler on balances. C. Petr. X. 3. 

 Emerson's mechanics. Fig. 188. 205. 206. 

 Brander Beschreibung einerhydrostatischen • 



wage. 8. Augsburg, 1771. 

 Magellan's balances. Roz.II.253. XVII. 44. 



432. 

 Scanegatty's hydrostatic balance. Roz. XVII. 



82. 

 E. M. A. I. Art. Balancier. E. M. Physique. 



Art. Balance. 

 Ramsden's balance. Roz. XXXIII. 144. 



Turns with •fjriisooi of 'he weight, and weighs ten poands. 



Ramsuen's hydrometrical balance. Roz. XL. 



432. 

 Shuckbilrgh on a balance. Ph. tr. 1798. 

 Liidicke's balance. Gilb. I. 123. 

 Troughton's balance. Nich. III. 233. ' 



Andrews's patent balance. Repert. XI. 16. 

 Prony's universal support for balances. Ann. 



Ch. XXXVI. 3. JNich. V. 313. Repert. 



XV. 51. 

 Guyton's report on a balance. Ann. Ch. 



XLII. 23. 

 Atwoodon balances. Gilb. IV. 148. 

 Dillon's balance approved. M. Inst. IV. 

 Wilson's patent weights. Repert. ii. II. 100. 



Studer remarks, that beams of steel become sometimes 

 erroneous by acquiring magnetic polarity. Gilb. XIII, 

 124. 



For weighing air or gases, the apparatus may be plunged 

 in water, to lessen the pressure on the beam. Robison. 



Money is sometimes weiglied by a simple lever with « 

 fixed weight : by flattening it, it might be made to prepon- 

 derate. 



Weighing Machines. 

 Weighing machines. Leup. Th. Stat. t. 45. 

 10 . . 19. Th. M. G. t. 33. 34. 



