48 
SELECTED ARTICLES. 
1 had 12 stools, 
1 " 10, 
2 " from 5 to 6, 
1 " 3 to 4, , 
1 " 1, 
1 not observed, 
1 none, 
1 was vomited. 
The result vs^as analogous to that obtained generally by the 
employment of any species of manna, which some persons 
digest entirely, and which others vomit after having taken. 
This proves, to remark in passing, how difficult it is in thera- 
peutics to determine rigidly the action of certain medicines. 
For if manna purified as has been specified in this report, dif- 
fers from flake manna by a small proportion of mannite, the 
principle to which many physicians refer its purgative pro- 
perty; if, on the other hand, the animal charcoal removes in a 
great measure the nauseous principle of the manna, in which, 
other authors state, resides exclusively the purgative action of 
the medicine, it should logically be concluded that purified 
manna is less purgative than flake manna and yet experience 
does not justify this deduction. 
Conclusion. 
The Committee is therefore of opinion: 1. That the manna 
presented to the Academy by M. Dausse, may be employed 
without inconvenience under the same circumstances as flake 
manna. 
2. That the method announced by M. Dausse not being ori- 
ginal, it is not proper to award to this pharmaceutist the ap- 
probation which he solicits, inasmuch as it would recognise a 
discovery where there exists but the simple revival of a 
method. 
3. That acknowledgments should be tendered to M. Dausse 
for his communication. 
Signed Honore^ Caveutou and Planche, 
Journal de Pharmacie. 
