222 B. Silliman, Jr., on the’ 
Tn reconstructing the supposed condition of the various ingre- _ 
dients, found as they probably existed in the waters, the rule 
adopted has been, to follow as nearly as possible the order of af- 
finities of the various elements concerned, and to regard also that 
partition of acids among bases which undoubtedly obtains in na- 
ture. It is indeed the opinion of Berzelius, Rose and other emi- 
nent chemists, that the effort to restore with accuracy the precise 
condition of the elementary combinations concerned in a mineral 
water, is altogether futile—except in cases of extraordinary sim- 
plicity ; and that it is the better way to state only the quantities 
of the various ingredients found, and leave it for the ingenuity 
of the student to reconstruct them as he finds most convenient. 
In my analysis of the waters of the Dead Sea I have peste.” 
this principle.* =~ 
It was however in the present case sedan renee the apeiee 
nature of the report in which these analyses appeared, to state 
them in the more usual form. ‘Table II shows the recon- 
structed condition of the —— of ten of the waters, — 
No. 11 is presented by itself. 
Taste If.—Showing the composition @ of the — social : 
of one gallon of each water. 
; M. Pt] C. (SP. P. 
Number of water, Ee a ee 4, 8.4 
Chloride of e a seta eat T a 367 03869 5 "1593 
Chloride of < fam gan teu :372| . 0044 
Chloride of ; Se eee ves 
Chioride of aluininium, 7166; 
Sulphate of potassa, . eC age 
eer of Boda, . = 8. ete 153 0-2276 ‘1510 
Sulphate of magnesia, Is Tre rie 1350) * 
*2624| 4940) +5700/2' 
Sulphate of ~n ow aes 235). nd | ¢ 
silica} silica 
ee “yt ba é ae tt A ‘i 
Phospha’ 32). » «|. . (0830) 0973) -0740 
Alumina, phalie 2: i ehteatiale do.| . 0. 1081 Real Pails Wag nd Ped ee 
: ‘0800 
Alumina,. ©... 
“0800 
Peel \o's7Sa11'87200-2380 4970} °1610) -0490) « 
nate of m “662 0°1420) °3510} .0630)-1300) °0399) +1030) - r 
bi Aragon of mio poor to ni- ; ; i 
; and carbonate of do. . 11865)... 16436) -5295)-7116) -5291) -9403) -4757| -2816 
any r,t Si Pella a 
MM Si es ee ji}. . |1-2468 | 
Actual amount after ignition, 33 e803 6 666, 1°2500 4.2608 1 12200 /2°550 1-6680)2°1000 2.21 462 
Bre 9162... 00032 SSER EN TS 5 
It will be seen that these tables afford us the means of com- 
paring the respective purity of different samples of the same wa- 
oe ‘taken from various positions and depths. The greener result 
Journal of f Science, First Bale xlviii, 10. 
on P., Mystic Pond—C., Croton River—C. R, Cliarles River—S. P., Spot 
Pond—s. , Pond: 
—S.R., — River. =—L.P. 
