226 Mr. Waldie's investigations connected [No. 3, 



Table IV. 

 The following table shews the results obtained by this process. 



Ammonia in 

 100,000 fl. grs. 



River water of 

 Rainy Season. 



6th July, 1866, 

 21st August, .. 



Average, .. 



Cold Season. 

 9th December, 1865, Shore, 

 Ditto, Stream, 



Ditto, ditto, 



27th ditto, ditto, 



Average, 



Hot Season. 

 Ebb tide. 



30th May, 

 14th June, 



Ditto repeated, ... 



Average, 



Flood Tide. 



30th May, ... 

 14th June, 



Ditto repeated, . , 



Average, 



grams. 



.1133 

 .1825 



.1429 



.0162 

 .0220 

 .0208 

 .0328 



.0229 



.0250 

 .0189 

 .0550 



.0329 



.0370 

 .1850 

 .1075 



.1098 



Now on an inspection of this table it will be easily observed that 

 the discrepancies are so great that the results cannot be depended on 

 as at all accurate. I have mentioned the difficulties and nicety of 

 the process, and the errors manifestly point out the necessity of 



