FOURTH LECTURE. 547 



dose of these remedies ; for this reason the treat- 

 ment ought to be directed and modified by a well 

 informed physician. 



Finally, it is to be borne in mind that the vir- 

 tue of the electuary A. depends in great part on 

 the root of the polypodium filix mas ; hence this 

 root should be fresh, and its internal hard part on- 

 ly should be reduced to powder. 



This powder w ill have a reddish colour ; see 

 Hartenkiel, Medlcinisch'chiriirgische, Zeitung, 

 1800, 2 Band, p. ;i93. 



(209) See §^ XXVII, LXXXIV, et seq. 



(210) See §^ LXXXIV, LXXXV, LXXXVI. 



(511) I have been the first to use this plant; 

 I have found it very efficacious in asthenic drop- 

 sies, in obstructions, scropula, and generally in 

 all crises of languor and inertia of the lymphatic 

 system. The figure of this very useful plant may 

 be seen in the first part of my Annotazionimedico' 

 pratiche sulle diverse malattie trattate nella clini- 

 ca medica di Pavia negV anni 1797 and 1798, and 

 its description; with practical observations, may be 

 found in the first part, cap. iii, of the same work. 



(512) Toxicodendres officinaucc, or the rhus- 

 radicans and toxicodendron of Linnaeus. I have 

 employed with the best success these two very poi- 

 sonous plants in cases of languor of the nervous 

 system, and principally in palsies, following ner- 

 vous apoplexies. 



This is not the place to report the really won- 

 derful cures effected by the leaves of these two 

 plants. 



