67 
of testing the righting qualities of these boats under cir- 
cumstances as severe or more severe than any to which 
they will ever be subjected, and this without waiting and 
without danofcr ; while with full-sized boats such tests are 
impossible, for even should an extreme storm occur 
opportunely for making the experiment, the danger involved 
with full-sized boats would preclude the possibility of their 
being undertaken. It is this last consideration which has 
led to these suggestions, and not the idea that the experi- 
ments on models would be more satisfactory ; while the 
fact that the experiments on models could be made at much 
smaller cost, is too small a matter to be considered, when, 
as in this case, the lives of some of the most heroic of our 
fellow countrymen, and the sentiments of the entire nation, 
are involved. 
“The Determination of the total Organic Carbon and 
Nitrogen in Waters by means of Standard Solutions,” by 
Chaeles a. Bueghaedt, Ph.D. 
The members of this Society may remember that I read 
before them a preliminary note on a method for rapidly 
determining the total organic carbon in waters, on the 23rd 
of February, of this year. The communication I make 
to-day must also be considered as a “preliminary note,” 
because the method of analysis applied in this case is entirely 
distinct from that given in my first communication, and I 
wish to collect all the material I can before venturing to 
criticise fully the work of other chemists in regard to the 
analysis of waters. 
I have during the last six months had many excellent 
opportunities for thoroughly testing the working of the 
chromic acid method for the determination of organic carbon 
in waters of various qualities, and am perfectly certain that 
the results are eminently satisfactory so far as the complete 
estimation of the organic carbon is concerned. I wished, 
