PHYSICAL AND LITERARY. 147 



have known it, though given in large 

 quantities, produce no efFed upon the bel- 

 ly: In fuch cafes, it becomes necelTary to 

 add a grain or two of fweet mercury, or 

 fome grains of rhubarb ; but it is to be 

 obferved, that the fame happy effeds did 

 not follow its ufe in this way, as when it 

 was purgative without addition. The 

 addition however of the purgative renders 

 its ufe fafe, and removes all danger of 

 convulfions of the eyes, although neither 

 ol. rut£, Jabhu, or any other nervous 

 fubftance, is given along with it. It is, 

 in general, fafer to give it in large dofes 

 than in fmall ; for, from the latter more 

 frequently the giddinefs, dimaefs of the 

 fightj and convulfions, Sec. follow ; where- 

 as, from large dofes, I have not known 

 any other effedl than its proving emetic 

 or violently cathartic. To a child of two 

 years of age, who had been taking ten 

 grains of the root twice a-day, without 

 having any other effecfl than making her 

 dull and giddy, I prefcribed 22 grains 

 morning and evening, which purged her 

 brifkly, and brought away five large 



worms. 



