€2gQ OH SPIDERS* \VEfiS, 



Ihcapit Illation of ihefi Experiments. 



Recapitulation of J ft cake of wootz revived udF lead - - , 1 ?5 



the experiments. ^d ditto .- - . - ,125 



3d ditto * - . - ,120 



4th ditto ... - ,156 



5th ditto - - " - - ,102 



Stee! containing -5*^ of Its weight of carbon - ,094? 

 Caft iron - _ , . _ ,228 



Wootz contains It would appear to refult from tliefe experiments, that wootz 

 morecarbontban ^Qj^jgjj^g ^ greater proportion of carbonaceous matter, than the 

 lefs than caft common qualities of call ileel in this country, and that fome 

 »ron» particular cakes approach confiderably to the nature of caft 



iron. This circumftance, added to the imperfect fufion whicli 

 generally occurs in the formation of wootz, appear to me to 

 be quite f^fficient to account for its refradlory nature, and 

 unhomogeneous texture. 

 Its ore fs pro- Notwilhilanding the many imperfedions with which wootz 



bably very ex- ^g loaded, it certainly polTelTes the radical principles of good 

 fieel, and imprefles us with a high opinibn of the ore from 

 wiiich it is formed. 



Tiie poffeffion of this ore for the fabrication of fteel and 

 bar iron, might to this country be an objefl of the higheft 

 importance. At prefent it is a fubjefl of regret, that fuch a 

 fource of wealth cannot be annexed to its capital and talent. 

 Were fuch an event practicable, then our Eaft India Company 

 might, in their own dominions, fupply their llores with a, 

 valuable article, and at a much inferior price to any they fend 

 from this country. 



XL 



A Memoir on the Webs of Spiders. By C. L. Cadet.* 



On the natural DPIDERS have often excited the curiofity of naturalift? ani 



and medical hif- ^i^g attention of phyficians. The former have fuccefsfully ftu» 



'^^ * died the habits and conduct of thefe infects; and notwith- 



lianding the repugnance they naturally infpire, thefe acottunt* 



* Abridged from the Journal de Phyfique, LVIII. 463. 



iiave 



