%$ COMBINATION* OF OXALIC ACJD. 



We may therefore consider this position as true ; and in 

 this case the snperoxalate of ammonia would be composed 

 of 

 I(s component 73'4 oxalic arid, 



pwts. 



14 ammonia, 

 12-6 water. 



100. 



Whence it follows, that 100 of ammonia are combined 

 with 523 of oxalic acid in this salt. 



I could never succeed in the attempt to form quadrox- 

 alate of ammonia. 



Oxalate of strontian. 



Oxalate of This salt is nearly insoluble in water. 



stroiuian. jq g^. of crystallized oxalic acid were dissolved in water, 



and neutralized by strontian. The oxalate of strontian, be- 

 ing evaporated to dryness, and exposed to a strong heat in a 

 platina crucible, left 11*9 gr. of carbonate of strontian* ; 

 which, having been decomposed by nitric ^cid, yielded 8*68'? 

 of strontian. 



From this analysis we have for the composition of oxalat? 

 of strontian 



Its component 45-54 oxalic acid, 



pills. 54*46 strontian. 



100. 



Whence it follows, that 100 of strontian unite with 83*6s 



of acid. ' 



liy Thomson D:. Thomson has certainly been deceived in his calcula- 



flcceived in his tion respecting the oxalate of strontian. It would follow, 



indeed, from the numbers he gives, that barytes has a 



greater capacity for saturation than strontian, which is con* 



p /) ♦ * Asl have been under the necessity of repeating this experiment 



pans of car- several times, I took great care to ascertain the proportions of carbonate 

 bonate of of strontian. The mean of all ray experiaients gave 



strontita. 



Strontian 73'6 



, Carbonic acid ..,,.... 26-4 



100. 



tradictory 



