144 Mr. Waldie's Investigations,. 



To sum up, it may be observed, that these extended enquiries, 

 though leaving many points yet imperfect, still go to confirm the 

 general conclusions arrived at in my first communication, favorable 

 to the water of the Hooghly, compared either with the Calcutta Tank 

 waters or the present London waters. I may repeat what I then said ; 

 " Such are the conclusions I have arrived at, some of them unexpected 

 even to myself, and which may be disputed by others." And I may 

 add, that they can only be properly controverted by evidence of the 

 incorrectness of the experimental results from which these conclusions 

 have been drawn. 



