CATALOGUE. PHILOSOPHY AXD ARTS, PRACTICAL MKCUANICS. 185 



Ironside on the son, or crotalaria juncea, used 

 for ropes. Ph. tr. 1774. 99- 



Antill on hemp. Roz. XIII. Suppl. 97. Re- 

 pert. V. 384. 



Flax and hemp. E. M. M. I. Art. Lin. 

 Chanvre. II. Suppl. Art. Lin et Chanvre. 



Cotton. E. M. M. I. Art. Colon. 



Stipa tenacissima, lime-tree bark, reeds, straw, 

 and agave or tree aloe. E. M. M. II. Art. 

 Sparte. 



Apocynum Syriacum. Moller on the Syrian 

 silk plant. Ph. M.VIH. 149- 



Guthrie on the cottan tree. Manch. M. V. 

 214. 



Labillardieire on the flax of New Zealand. 

 B. Soc. Phil. n. 15. Journ. R. I. II. Ph. 

 M. XVII. 374. 



Roxburgh on the strength of various vege- 

 tables. S. A. XXII. 3fi3. 



Finds hemp the strongest of all, except the agave and the 

 aletris : the agave Jj stronger, the aletris nerv«^a f 



From the Journals of the Rnyal Inslitiition, II. 104. Ex- 

 tract from a Memoir of Mr. LaHUardiire, on IheStrength 

 of the Fibres "f the Fiax of New Zealand. Read before 

 the National Institute. B. Soc. Phil. n. 75. 



This flax, the phormium tenax, was procured from the 

 inhabitants of New Zealand, by Mr. Labillardiere himself, 

 in the voyage he made in search of La Peyrouse. 



In these experiments particular care was taken to employ 

 substances of a diameter as equable as possible throughout 

 their lengths. The inferences are, that the strength of the 

 fibres of the great aloe, agave Americana, being equal to 7, 

 that of common flax is represented by 1 1 i ; that of hgmp, 

 by 16^ ; that of the flax of New Zealand by 23-,^; and that 

 of silli by 3-1. If we call the strength of flax lOOO, that of 

 the aloe will be 59O, of hemp 1390, of the phormium 1990, 

 and of silk 2894. 



The degree of extension of these fibres, before ihey break, 

 is in a different proportion. Supposing it 1 for flax, it is 2 for 

 hemp, 3 for the flax of New Zealand, 5 for the agave, and 

 10 for silk. It is well known that the strength of cords de- 

 pends as well on their elasticity, as on the ultimate force 

 required to break them. 



The experiments and reflexions of Mr. Labillardiere show, 

 VOL. II. 



beyond contradiction, that many advantages may be obtain- 

 ed from the cultivatiori of this flax on a large scaje ; and 

 that it may be attempted with a prospect of success in the 

 southern parts of France. 



Mineral. 



Ciampini on asbestus. Ph. tr. 1701. 91 !• 

 Gold thread. E. M. PI. IV. Tireur d'or. 



Pi'eparalions for Spinning or 

 Winding. 



Chopitel's machine used in making cards. 

 A. P. 1747. H. 127. 



Preparation of silk. Roz. Intr. II. 227. 



Comb pots. Bailey's mach. I. 111. 



Antill on hemp. Roz. XKl. Suppl. 97. Re- 

 perl. V. 384. 



Machine for hackling flax. E. M. Art Ara- 

 toire. 



Enc. Br. Art. Woolcombing. E. M. M. L 

 Art. Peignage. 



E. iM.M. I. Art. Cardes. 



CoUomb on the varnish of silk. Roz. XXVII. 

 9.5. 



Hughes's machine for twitching wool. S. A. 

 VII. 193. Repert I. 93. 



Prozet on dressing hemp. Roz. XXIX. 241. 



Carlwright's patent machine for combing 

 wool. Repert. I. 228. 



Wright's patent machine for combing wool. 

 Repert. 11.217. 



Daniel's comb pot. Repert. VII. 199. 



Hawksley's patent for combing wool. Re- 

 pert. VIII. 217. 



Varley's patent for carding and spinning. 

 Repert. XI. 217. 



Foden's size for dressing cotton. Repert." 

 XIII. 5. 



Bovvden's patent machine for batting cotton. 

 Repert. XVI. 5. 

 Before carding. 



Bb 



