328 TREATMENT OF 



the whole to be swallowed by the patient, rins- 

 ing the tumbler two or three times with the same 

 water, that none of the powder may remain in the 

 glass or mouth. 



^' For children, the dose of this powder is lessen- 

 ed to one drachm. If the patient, after taking the 

 powder, sliould be incommoded with nausea, he 

 must inhale the odour of strong vinegar ; if, not- 

 withstanding this, the po'Mier rises and seems rea- 

 dy to be discharged from the mouth, he must swal- 

 low and do every thing in his power to keep it 

 down ; but if obliged to reject it in whole or in 

 part, he must continue to take it till the nausea 

 ceases, and till what equals the first dose is retained, 



'^ Two hours after the powder is taken, the pa- 

 tient is to swallow the following bolus : take sub- 

 muris.'ie of mercury, and dry resin of scammony of 

 Aleppo, of each twelve grains, of gamboge five 

 grains ; reduce these three articles to a very fine 

 powder, and with a suflBcient quantity of hyacinth 

 confection form the whole into a bolus of middling 

 consistence ; this is the purgative dose usually giv- 

 en ; that of the confection' 1 61) is from two scruples 

 to two scruples and a half for persons of robust con- 

 stitution, or difficult to purge, or who have previous- 

 ly taken strong purgatives. A bolus compounded of 

 eight and a half grains of submuriate of mercury, and 

 the same quantity of the resin of scammony, is 

 given to weak persons who are sensible to the ac- 

 tion of purgfilivcs, and for children the dose should 

 be diminished agreebly to the prudence of the phy- 



