Twenty-first Annual Meeting. 109 



at ten-mile intervals, instead of one-mile intervals, and consequently an exact five- 

 minute comparison cannot be made; but one ten-mile run was made in 6.45 minutes, 

 which is at the rate of 93.3 miles per hour. Neither set of cups was blown off or in 

 the least disabled by this wind. It was a result entirely unexpected by the writer, 

 that the two anemometers should so closely correspond in their aggregate and max- 

 imum velocities. The period under discussion includes the three calmest months of 

 the year, and consequently the smaller instrument has a slight advantage over the 

 larger in total returns. It will probably be found, when we are able to include one 

 entire year in the comparison, that the larger cups will have a very slight advantage 

 over the smaller; but the difference between the total velocities of these instruments 

 is so minute as hardly to be worthy of consideration. 



MINERAL WATERS. 



G. H. FAILYER AND C. M. BREESE, 

 Kansas State Agricultural College, Manhattan. 



In reporting the results of the analyses of mineral waters made during the year, 

 we have followed the recommendation of the committee appointed by the Chemical 

 Section of the A. A. A. S., to report upon best methods of stating results*: that is, 

 the basic elements are given as such, not as oxides, as was usual previously; the 

 acidic elements are given as such, if directly combined with a basic element; if in 

 the form of an oxygen acid, the whole of the oxygen of the salt is given in stating 

 the amount of the acid. Instead of giving magnesium sulphate (MgS04) as MgO 

 and SO3, it is now given as Mg and SO^. Chlorine is given, and not hydrochloric 

 acid, the element chlorine being directly combined with the metal, as in NaCl. 



The amounts are given in parts per thousand. The specific gravity of a water 

 containing so little in solution is appreciably one, and these amounts may be taken 

 as giving the grams per litre. Multiplied by 58.3 they will give approximately the 

 grains per D. S. gallon. The results can thus be readily reduced to this form by 

 those who so desire; but of the three forms, that of parts per thousand is the sim- 

 plest statement of the strength of a solution. These are ratios that can be seen 

 readily, while it requires more than ordinary familiarity with these units to enable 

 one to perceive the relation of solids to the liquid in which they are found, when 

 stated as grains per gallon. 



No. 1 is from Burr Oak, Kansas. 



No. 2 is from Conway, Kansas. 



j^o 1 Parts 



per 1000. 



Potassium Trace. 



Sodium 3170 



Lithium 0008 



Calcium (as bicarbonate) 0038 



Calcium (not as bicarbonate) 4585 



Magnesium (as bicarbonate) 0015 



Magnesium (not as bicarbonate) 3733 



Alumina 1175 



Iron (as bicarbonate) 0144 



Sulphuric acid ( SO4) 2.9407 



Chlorine 1051 



Phosphoric acid Trace. 



Boric acid Trace. 



Silica 0883 



Combined and free carbonic acid not determined. 



*See Proceedings American Association for the Advancement of Science, 1887, page 143. 



