CHEMISTRY. 



EI emails 

 of 



Chemistry. 



Sp. Caloric. 



Lungs of a sheep 0.7690 * 



Leaa of ox-beef 0.7400* 



VIII. Vegetable Substances. 



Pinus sylvestris 

 Pin us abies . . 



. 0.65 U 

 . 0.60 f 

 . 0.62 if 

 . 0.58 f 

 . 0.57 f 

 . 0.53 f 

 . 0.51 If 

 . 0.511f 

 . 0.50 f 

 0.5060* 

 0.5020* 

 0.5000 

 0.4920* 

 . 0.49 f 

 . 0.4811 

 . 0.48 U 

 0.4770* 

 . 0.47 If 

 . 0.45 if 

 . 0.44 j 

 . 0.43 

 0.4210* 

 0.4160* 

 f0.28(o) 

 [0.2777* 

 0.2631* 

 0.1923* 



IX. Earthy Bodiet, Stone-ware and Glats. 

 Hydrate of lime ........ 0.40(o) 



"- 



Tilea Europza 



Pinus picea , 



Pyrus malus , 



Betula alnus , 



Quercus robur sessilis . . . 



Fraxinus excelsior 



Pyrus communis 



Rice 



Horse beans 



Dust of the pine-tree . . . , 



Peas 



Fagus sylvatica 



Carpinus betulus 



Betula alba 



Wheat 



Elm 



Quercus robur pedunculata 



Prunus domestica 



Diospyrus ebenum . . . . . 



Barley 



Oats 



Pit-coal 



Cha-coal 



Cinders 



Quick-lime 



r 0.30(n) 

 0.2229* 

 i 0.2168 \ 

 Ashes of pit coal ........ 0.1855* 



Ashes of elm ..... ..... 0.14O2* 



Agate .............. 0.105 



Stone- ware ............ O.iy5f 



Crown glass .......... 0.200(a) 



Crystal ............. 0.1929J 



Swedish glass .......... 0.187$ 



** .......... 



x - *"/*- {SSf? 



Muriate of soda 0.23 (D) 



XI. Metali. 

 Platinum 0.13 (a) 



Iron 



Brass 



0.13(D) 

 0.125f 

 0.1269* 

 0.126$ 



'0.1123 

 0.116$ 



.0.11 (D) 



Copper 



Sp. Caloric. 



ro.iin* 



-J0.114J 



tQ.ll(D) 



Sheet-iron 0.1099 J 



Gun-metal 0.1 100 ]| 



Nickel 0.10(D) 



'0.0943* 



Zinc 1 0.102 $ 



O.lO(o) 



0.082$ 



0.08 (D) 



0.068 f 



0.0704' 



0.07(D) 



0.060$ 



0.086f 



0.0615 * 



0.063$ 



Silver 



Tin 



Antimony 



Lead . 



0.050 f 

 0.0352 * 

 10.042$ 

 0.04 (D) 



f 0.033 f 



|sss; 



(.0.0496(0) 



XII. Oxides. 



Oxide of iron 



Rust of iron 



Ditto, nearly free from air . . . 



White oxide of antimony washed 



Ditto, nearly freed from air . . 



Oxide of copper ditto 



Oxide of lead and tin 



Oxide of zinc ditto 



Oxide of tin nearly free from air 

 Yellow oxide of lead ditto . 



. 0.320 f 

 0.2500* 

 0.1666* 

 f0.220f 

 10.2272* 

 0.1666* 

 0.2272* 

 . 0.102f 

 0.1369* 

 f 0.0990* 

 |0.096f 

 f 0.0680* 

 |0.068t 



Elements 



of 

 Chemistry. 



The specific heats of the gaseous bodies in the 

 preceding table were ascertained by Dr Crawford, by 

 means of very delicate experiments, made with every 

 possible precaution to insure accuracy. Yet there 

 is little probability that they are accurate. Nor are 

 we in possession of any means of making them more 

 eo by experiment. Mr Dalton has calculated the 

 specific heat of the different gases from theory. The 

 following are the numbers he obtained. The specific 

 heat of water, as usual, being 1. 



Hydrogen gas 9.382 



Azotic 1.866 



Oxygen 1.333 



Air 1.759 



Nitrous gas 0.777 



