I8o0.] Professor Faraday , on the Electric Silk-Loom. 271 



Mackie, S. J. Esq. F.G.S. (the Editory-The Geologist, May 1860. 

 Newton, Messrs. — London Journal (New Series), for May 1860. 8va 

 Novello, Mr. (the Publisher)— The Musical Times for May 1860. 4to. 

 Petermann, A. Esq. (the £at7or)— Mittheilungen auf dem Gesammtgebiete der 



Geographic. 1860. Heft 5. 4to. Gotha, 1860. 

 Phillips, John, Esq. (the Author)— Address to the Geological Society, Feb. 17, 



1860. 8vo. 1860. 

 Photographic Society— 3 onmtd. No. 97. 8vo. I860. 

 iJo^afSoctefy— Proceedings, No. 38. 8vo. 1860. 



Transactions, Vol. CXLIX. Part 2. 4to. 1860. 

 Boyal Society ©/"Ztf erasure —Transactions, Vol. VI. Part 3. 8vo. 1859. 

 Vereins zur BefSrderung des Gewerbfleisses in Preussen — Verhandlungen, Jan. und 



Feb. 1860. 4to. 

 Walker, A. De Noe, Esq. M.R.I.—A Chinese Chrestomathy in the Canton Dia- 

 lect. By E. C. Bridgman. 4to. Macao. 1841. 

 Weale, John, Esq. (the Publisher)— Seven Volumes of his Educational Series 



(Classical Literature). 16to. 1859-60. 

 Yates, James, Esq. F.R.S. and the Rev. A. Barrett (the ^uf^ors;— Improvements 



in Arithmetic (by the Decimal System). 8vo. 1860. 

 Yorkshire Philosophical Society— Annual Report for 1859. Svq, 1860. 



WEEKLY EVENING MEETING, 



Friday, June 8, 1860. 



The Duke op Wellington, K.G. D.C.L. Vice-President, 

 in the Chair. 



Professoe Fabaday, D.C.L. F.R.S. 

 On the Electric Silk-Loom. 



" Illustrans Commoda ViTiE,"* the motto of the Royal Institution, 

 was made the ruling principle on this the last evening of the season ; 

 an account being given of the application by M. Bonelli of electricity, 

 to the service of the figure weaving-loom. The astonishing condition 

 of perfection to which M. Jacquard had brought the silk-loom, so that 

 artists of the highest rank could not without minute inspection distin- 

 guish its results from the most perfect engraving, and the manner in 

 which he taught the weaver to construct a series of cards, and then to 

 use them automatically, so as to produce as often as he pleased the 

 design which they represented, are well known. Any effect of pat- 

 tern, either simple or complicated, which is produced in the woven 

 fabric depends upon the manner in which the threads of the warp are 

 separated before the weft is thrown, and the successive rearrangements 

 of the warp threads which are brought about each time the shuttle is 

 passed. A single thread of the weft therefore represents an element 



* Lucretius, iii. 2. 



