8 SCIENTIFIC SURVEY OF TURNER’S LAKE 
of potassium is present, but it is possible that some of the needed 
silica, itself collodial, may have been retained by the collodial organic 
matter. That might account for the discrepancy. 
FP. W. CLARKE. 
New York STATE COLLEGE FOR TEACHERS 
ALBANY, June 14, 1923 
The correct interpretation of the analyses of water submitted is 
very difficult if not impossible. 
Time has not been available for the consideration of this problem 
in all its phases. Accepting the analyses as given it would seem to 
me that other theoretical combinations than those presented would 
be more consistent. 
In both analyses I should assume that the potassium is held in 
theoretical combination with the silica and the alumina. In the 
analysis of the surface water therefore the theoretical combinations 
might be: 
EONS TOON UR NG EAC OOANELENO LRN NLR A 5.64 
TAO) a Ce IO UR Mean Zs 
INA OOO TAY EE Rai COE NC 44.94 
CaGO Ns We NU RCH AON ER aE Renu Ne 10.00 
LN Bed OX @ AVN AUNT EYE TUG GIR Sa aN ati Suri; 
ANTS OS TEL OPRE AN WON Lan SEN an a 19.49 
OAM AE MOE SNe a APA 20.03 
The iron and the aluminum could very well be held in solution in 
the form of colloidal hydrates. This water would be alkaline but 
with an uncalculated Py value. 
Similar theoretical combinations might be made from the report 
of the bottom water. The hydrogen ion concentrations however dif- 
fer inexplicably. Determination of the Py values might have helped 
considerably in formulating a consistent hypothesis. 
Combinations, such as those given, relieve the necessity of imagin- 
ing so great an amount of the potassium in combination with the 
organic matter. This hypothesis to me seems doubtful. 
ESTO RN AOU NLR) AEST AAR AUDA Ra RE eRe ONES 11.28 
1 EVAN EA) AMAA NMOL es hehe Vi eh 4.74 
TRH en CAIN GMS Ab Bare AUG Me NO 2.60 
