* 1887.] MICROSCOPICAL JOURNAL. 211 
ligrammes per kilogramme, with the temperature stated, and that Clark’s 
and all other systems be abandoned. 
2d. That all analyses should be stated in terms of the radicals found, 
both elementary or compound. 
ads Ehe constituent radicals should be arranged in electro-chemical series, 
the positive radicals first. 
4th. The combinations deemed most probable by the chemist making the 
analysis should be stated both by symbols and by name.’ 
After some discussion of the matter the following committee of the Chem- 
ical Section was appointed to report for the consideration of the section at 
its meeting in 1887 a scheme for a uniform method of stating the results of 
analyses of both mineral and potable waters :—Professors G. C. Caldwell, 
J. W. Langley, W. P. Mason, J. R. Myers and R. B. Warder. 
This committee, concluding that the scale which would be convenient and 
suitable for a mineral water would if applied to a potable water involve the 
use of inconveniently small decimals, recommended the adoption of two scales, 
and, furthermore, as will be seen on comparison of their recommendations 
with those of the committee of the Washington Chemical Society, of many of 
the features of that report. 
I. Scheme for a mineral water. 
The composition shall be expressed in parts per thousand. 
The number of parts per thousand shall be given of each electro-positive or 
basic element, K, Na, Li, Ca, Mg, Fe11 (Fe,)™ etc., and of each electro- 
negative or acidic element, Cl, Br, I, S, etc., that may reasonably be sup- 
posed to be combined directly with an electro-positive element, all these 
elements being arranged in the order of their electro-chemical character, the 
electro-positive first. The remaining portions of the electro-negative elements 
shall be given, together with all the oxygen of their salts, as in the present gen- 
erally accepted empirical formulas of those salts, such as SO,, PO,, CO,, etc. 
The number of cubic centimetres per litre shall be given of CO,, H, S, 
etc., expelled on boiling. 
The combinations deemed most appropriate by the chemist making the 
analysis shall be stated both by symbols and by name. 
II. Scheme for a potable water. 
The composition of the water shall be expressed in parts per million (mil- 
ligrammes per litre) as follows :— 
MRSICAISOltdS? 3 ats Sa eels abl ous ee a AGS slay Lhd sore RS 
Motels y= 78 aw fet is. BAN BOE: yagi GAs ane Se ev 
Nitrogen expelled on boiling with Na,CO,.. 0°. 6. 0. | 
EqualsGiréesamitnormiae 1h. Sat Peele ar ere eas 
expelled on boiling with alk. permang....... 
equals, Palbuniunoid ammoniay. wo. 5 6). 
AS ULEALE) Wsprepeeeey ats = bAbES lle chive Shable Somle cs ts: dot 0% 
ASMUtIRey. si eee rcrt is 9s Sat Seal Meee sad ak ye aa iad 
LIP IAGUMGR TY, PES AZ 2 SO \ So Rn a yp ats 
Oxygen consumed (by permanganate treatment). ....... 
After discussion of the report it was voted that it be printed and a copy be 
sent to each member of the section, and that it be referred back to the same 
committee for further consideration in the light of such criticisms and sug- 
gestions as may be received from others, to the end that in the form finally 
approved it may have the widest possible adoption. 
The committee therefore invites from all who may see this report, and are 
interested in the subject, an expression of approval of the schemes proposed, 
or of disapproval, with the reasons for the same arid suggestions for their 
amendment. Communications may be sent to the chairman of the commit- 
tee at Ithaca, N. Y.—/Journal of Analytical Chemistry. 
