•1513.] Vessels containing a Well on Board. 357 



Experiment. 



Oz. AvoircL 



Weight of the water displaced by the parallelopi- 7 „ 

 pedon was 5 



Weight of the parallelopipedon substract 111-56 



Remains the weight of ballast 447*50 



When the well is filled must be deducted the? nn . n ~, 

 weight ot water 3 



Remains the weight of ballast used inExperi-7 ,„„ ,„ 

 ments II. and III S 



ExPER. I. 



2-4 6S7 



4-9531 



7-7343 



10-7187 



13-96S7 



17-3431 



Difference, 



2-4844 



2-7812 

 2-9814 

 3-2500 

 33750 



Ex PER. IL 



23437 



5-0075 



7-73-13 



10-9375 



13 8750 



17 3437 



Difference. 



2-6638 

 2-7248 

 3-2062 

 2-9S75 



3-4687 



EXFER. III. 



2-3759 

 4-3125 

 6-1612 

 8-3750 

 10-8906 

 13-5312 



Difference. ' 



1-9375 

 I '8487 

 22138 

 2-5156 

 2-6406 



The first column shows the degree of inclination produced by 

 the weights (Column 2.) applied to a lever of 24-J1 inches in 

 length. 1 remain, my dear .Sir, 



Your much obliged and faithful 



Maiik Beau fox\ 



Article VIIL 



Experiments on the Nature of Azote, of Hydrogen, and of 

 Ammonia, and upon the Degrees of Oxidation of which vlxote 

 is susceptible. By Jacob Berzelius, M.D. F.R.S. professor 

 of Chemistry and Pharmacy in Stockholm. 



{Continued from p. 281.) 



Let us now examine the composition of nitrous arid. 



Gay-Luasac, in a memoir on this subject, has endeavoured to 

 prove that this acid is formed ulun three w.luiius pf niuous gas 

 are condensed by one volume of oxygen gas ; that is to say, that 

 one volume of azote requires 1 j volume oi oxygen to be con- 



