ON CITRATE OF MAGNESIA. 
221 
Citrate of magnesia may, therefore, be considered as 
having the following composition: 
1 eq. Citric acid, . . 2511.25 55.3 
3 eq. Magnesia, . . 774 00 17.2 
1 eq. Water of Constitution, 112.50 2.5 
10 eq. Water of Crystallization, 1125.00 25.0 
4522.75 100.0 
There is the same quantity of oxygen in the water present 
as in the acid. 
I propose the following preparation for the administration 
of citrate of magnesia: 
SEIDLITZ WATER FREE FROM BITTERNESS.* 
Or j Purgative Mineral Water of Citrate of Magnesia. 
No. 1 (mild.) 
grammes. grains. 
Citrate of Magnesia, . . 40 = 617.360 
Citric Acid, . ... 2 = 30.868 
Simple Syrup, . . 125 == 1929.252 
Essence of Orange, . . q.s. 
Water charged with Carbonic Acid, q.s. 
to fill a common mineral water bottle, containing 750 
grammes (about the size of a wine bottle.) 
No. 2 (strong.) 
grammes. grains. 
Citrate of Magnesia, . . 50 = 771.701 
Citric Acid, . . ... 2i = 3S.585 
Simple Syrup, . . 150 == 2315.103 
Essence of Orange, . . q.s. 
Carbonic Acid Water, . . q.s. 
for a wine bottle. 
The following is the formula for making 100 bottles of 
* The common seidlitz water, as made on the continent, contains 
sulphate of magnesia. 
20 
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