222 



Cakeof wootz, 

 N*. 3. 



Cake, of wootz. 

 No. 4. 



Cake of wootz, 

 Na. 5. 



rXPERIMENTS ON WOOTZ. 



and more fparkling than No. 1 . In breaking, the fra6lure tofc 

 but flighlly out, and difplayed the fame unconneded laminae 

 with rufly furfaces, as was obferved in No. 1. Befide thefe, 

 two thin fins of malleable iron proje6led from the unfound 

 fide, and Teemed incorporated with the mafs of Heel through- 

 out. Towards the centre of the break, and near to the excref- 

 cence common to all the cakes, groups of malleable grains 

 were diftinflly vifible. The fame appearance, though in a 

 flighter degree, manifefled itfelf in various places throughout 

 the break. 



No. 3. The upper furface of this cake contained feveral deep 

 pits, which feemed to refult from the want of proper fluidity 

 in fufion. They differed materially from thofe defcribed upon 

 the convex fides of No. 1 and 2, and were of that kind that 

 would materially effedt the fleel in forging. 



The under or convex fide of thi.^ fiake prefented a few 

 cryftalline depreffion's, and thofe very (mall ; the convexity 

 was greater than that of No. 1 and 2, the fra6iure of the fin 

 almofi fmooth, and only in one place exhibited a fmall degree 

 of tenacity in the a6l of parting. In the middle of (he break, 

 about half an inch of foft fteel was evident ; and in different 

 fpots throughout numerous groups of malleable grains, and 

 thin laminae of foft blue tough iron made their appearance. 



No. 4. Was a thick denl'e cake poflefled of the greatef! 

 convexity ; the deprelfions upon the under fide were neither 

 fo large, nor fo numerous as thofe in No. 1 and 2, nor did they 

 approach the upper furface of the cake further than the acute 

 edge. This furface had the moft evident marks of hammering 

 to deprefs the feeder, or fungous part of the metal, which in 

 the manufacturing feems the gate or orifice by which the metal 

 defcends in the a6t of gravitation. 



The break, of this cake, however favourable as to external 

 appearance, was far from being foHd. Towards the feeder it 

 feemed loofe and crumbly, and much oxidated. The grain 

 divided itfelf into two diftin^ flrata, one of a denfe whitifii 

 colour, the other large and bluifli, containing a number of fmall 

 fpecks of great brilliancy. Several irregular lines of malleable 

 iron pervaded the mafs in various places, which indicated a 

 compound too heterogeneous for good fleel. 



5th cake. This was materially different in appearance from 

 any of the former, it had received but little hammering, yet 



was 





