256 Dr. Thomas Thomson's Observations 



TABLE II.— Binary Compounds. 



Silica, 

 Alumina, 



Atomic Specific Product 

 heat. neat 



2 

 2-25 



Protoxide of azote, 



Lime, 



Magnesia, 

 Protoxide of lead, . 

 Oxide of zinc, . . 

 Oxide of copper, . 

 Red oxide of mercury 

 Protoxide of tin, . 

 Oxide of chromium, 

 Sulphuret of lead, 

 Sulphuret of mercury, 

 Sulphuret of zinc, 

 Sulphuret of iron. 

 Sulphide of arsenic 



0-179* 

 0-1942:j: 



2-75 

 35 

 2-5 

 14 



5-125 



5 

 13-5 



8-25 



5 

 15 

 14-5 



6-125 



5-5 



6-75 



0-2369 



0-179* 



0-276+ 



0-05* 



0- 137(c) 



0-137+ 



0-049* 



0-096* 



0-196| 



0-053+ 



052} 



0-153$ 



0-135* 



0.1111} 



0-358 

 0-437 



Water, . . . . M25 



Corrosive sublimate 17 



Common salt, . . 7-5 



Chloride of potassium, 9*5 

 Chloride of calcium, 7 



TABLE III.- 



0-651 

 0-626 

 0-690 

 0-700 

 0-702 

 0-685 

 0-665 

 0-775 

 0-980 

 0-795 

 0-764 

 0-701 

 0-742 

 0-750 



1 



0-069* 

 0-221* 

 0-184* 

 0-194* 



(MeanO-788 

 •j 0-375 x 2 

 ( = 0-750 



1-125 

 1-175 

 1-657 

 1-748 

 1-358 



("Mean 1-150 

 <J 0-375 x 3 

 (.= 1125 

 ("Mean 1-587 

 <J 0-375 x 4 

 (= 1-500 



Peroxide of iron, 

 Orpiment, . . 

 Arsenious acid, 



Compounds of 2J atoms. 



Product. 



Atomic 

 weigrht. 



5 



7-75 

 6-25 



Specific 

 heat. 



0-1691+ 



0-105* 



0-141* 



0-846 

 0-814 

 0-881 



("Mean 0-847 

 { 0-375 x 2k 

 (=0-9375 



TABLE IV.— Ternary Compounds. 



Carbonic oxide, 

 Olefiant gas . . 

 Antimonious acid, 

 Deutoxide of mang., 

 Peroxide of tin, 

 Suboxide of copper, 

 Titanic acid, . . 

 Bi-sulphuret of iron, 

 Bi-sulph. of molybden 

 Calomel, . . . 

 Brass, . . . 



Mean 1-071 

 375 x 3 = 

 25 



!M€ 

 0-3 

 1-1 



