Experiments on the different kinds of Coal. 295 



(Table continued.) 



Substances submitted to Desiccation at the Tem- 

 perature of Boiling Water, their original Weight 

 being represented by 100. 



Weight retain, 

 ed after Desic- 

 cation. 



Coal of Loebejun, in the circle of the Saale in Prussia, with 

 pulverulent coke, .------ 



Piciform coal of Planitz, kingdom of Saxony, with con- 

 glutinated coke, - - - - - - 



Coal of Pottschapel, near Dresden, with intumesced coke, 

 Glance coal of the country of Tecklenburg, Lingen, 

 Glance coal (glanzkohle) pretended anthracite of Schonfeld 

 in Saxony, with pulverulent coke, - - . . 

 Glance coal of Lischwitz, near Jena, in Saxony, - 

 Conchoidal anthracite of Rhode Island, United States, - 

 Pretended anthracite of La Motte, department of the 

 Isere, with pulverulent coke, - - . - - 

 Coal of the country of Waldenburg, Lower Silesia, with 

 intumesced coke, ..-.,--- 



Coal from Westphalia, with pulverulent coke. 

 Coal from Brazil, with pulverulent coke, . - - 

 Coal from Upper Silesia, with pulverulent coke. 

 Another variety of the same, with pulverulent coke. 

 Coal of the country of Waldenburg, passing from coal with 



vesicular coke, to coal with intumesced coke. 

 Coal of Upper Silesia, with intumesced coke. 

 Coal of the country of Waldenburg, with pulverulent 

 coke, --.---- -- 



Coal of Upper Silesia, with conglutin^ted coke. 



Coal of the neighbourhood of Beuthen, Upper Silesia, with 



pulverulent coke, 



Coal of the country of Saarbruck, with intumesced coke. 

 Coal of Eschweiler, country of Aix-la-Chapelle, with in- 

 tumesced coke, >-----«- 

 Coal of Eschweiler, another bed, with intumesced coke, - 

 Coal of Wellesweiler, country of Saarbruck, with intu- 

 mesced coke, -.---.-- 

 Coal of the country of Waldenburg, Lower Silesia, with 

 intumesced coke, .-,---- 



Intumesced coke, -------- 



Conglutinated coke, 



Pulverulent coke, ..-.--- 



Graphite, or plumbago, from Borrowdale, - - - 



Sugar, --- -- 



Saltpetre (nitrate of potash) ------ 



Sulphate of potash, ^ 



99. 



94.3 

 94.4 

 98.3 



95.95 



94.8 



94.9 



95.5 



97.8 



99. 



89.4 



93.2 



97.1 



98.5 

 97.1 



96.4 

 95.9 



93.1 

 95.1 



99.1 

 99.1 



97.85 



97.8 

 95.55 

 95.6 

 95.5 



100. 



100. 



100. 



100. 



