286 



BACON. 



Table II. — Results with varying amounts of uranyl acetate solution. 



[One per cent solution of uranyl acetate and 10 per cent solution of oxalic acid. October 

 25, 1909. Manila. 11.10 a. m. to 12 a. ra. Sky slightly overcast. All solutions 

 made up to 20 cubic centimeters.] 



Number. 



Oxalic 

 acid so- 

 lution. 



Uranyl 



acetate 



solution. 



Oxalic 



acid 

 decom- 

 posed. 



Differ- 

 ence for 



1 cubic 

 centime- 

 ter 



uranyl 



acetate 

 solution. 



1_ _ 



cc. 

 10 

 10 

 10 

 10 

 10 

 10 

 10 

 10 



cc. 



10 

 9 

 8 

 7 

 6 

 5 

 4 

 3 



Per cent. 

 8.9 

 8.0 

 7.2 

 6.4 

 5.6' 

 4.9 

 4.0 

 3.1 

 2.8 

 1.0 



0.9 

 0.8 

 0.8 

 0.8 

 0.8 

 0.7 

 0.9 

 0.9 

 0.3 

 1.8 



2 _ 



3_ — __- . 



4 .. . 



5 



6 . . 





8 . - __ _ _ 



9- - _ 



10 2 



1 



10 



10_ _ — . _ . _ 









The effect of acids, alkalies and a few other substances on the rate of the 

 reaction was next studied. The results are presented in the following table. 



Table IV. — Results of the 1 addition of other substances on the rate of reaction. 



[Ten per cent oxalic acid, 1 per cent uranyl acetate solution. Exposed October 25, 1909, 

 11.10 a. m. to 12 m. Sky slightly overcast. All solutions made up to a volume 

 of 20 cubic centimeters.] 



Number. 



Oxalic 

 acid 

 solu- 

 tion. 



Uranyl 

 acetate 

 solu- 

 tion. 



Other additions, cubic centimeters. 



Oxalic 



acid 

 decom- 

 posed. 



11 



cc. 

 5 



5 



5 



5 



5 



5 

 5 



cc. 

 5 



5 



5 



5 



5 



5 



5 

 5 



N 

 10, sulphuric acid _.. 



Per cent. 

 6.25 



6.25 



6.31 



6.25 



6.31 



0.0 



6.25 



6.20 



6.25 

 6.25 



12 



10 

 10, acetic acid_ 



13 _ - 



10 



N 



5,— sulphuric acid ._. 



.10 



N 

 10, hydrochloric acid 



14 



15 



N 

 10, sodium hydrate 



16. 



'10 

 10, 10 per cent sodium hydrate _ 



17 



1, 10 per cent sulphuric acid . __. 



18'- _ __. 



5,10 per cent ammonium oxalate 



5, 10 per cent ammonium oxalate and i 



10, — sulphuric acid. | 

 10 ) 



Control - -- - 



19 _ „ 





20 



5 



5 





