110 
possessing all the requisites necessary for preventing so serious an 
injury to mankind, though apparently of slight importance, from 
the little regard we pay to our health unless when we are sick, and 
then we are anxious for medical aid, and for the dest medicine. 
Dealers and traders in drugs ought to be skilled in distinguish- 
mg the good or bad state of what they buy and sell; but the 
misfortune is, that this trade, which by an order of Government 
should be carried on solely by apothecaries and druggists, 
properly qualified and experienced, is in the hands of. empi- 
Tics, who attend only to their own interests ; hence the profit 
derived from the sale of drugs is the main consideration, and not 
their good or bad quality. , 
The conveyance of the roots of the Calaguala should be effected 
after the mode prescribed in my Quinologia, in treating of the 
package of the barks of the Cascarillas or Quinas, in chests 
with the seams or joinings well secured, and covered with or 
hide, to prevent all the damages already mentioned. 
The roots of the genuine Calaguala, used as such in Peru; 
scarcely ever occur in European commerce, as those most com- 
‘monly sold by the druggists and dealers in Cadiz are of the se= 
cond, or more commonly of ‘the third, species ; that is, of the 
Puntu-puntu and Huacsaro ; and even among those of the’ se- 
cond, there are usually roots*of other species of Polypodium, 
which from their great resemblance to each gous are eee 
distinguishable, except by their thickness. | ° 
The roots of the genuine Calaguala differ revises froin 
thine of the second species, or Puntu-puntu, and both differ 
wholly from the third, which is a species of a genus distinct from 
the other two; and the roots of the Huacsaro, also, are: usually 
mixed with those of two other species of its own genus: Besides 
these species. of Calaguala sold = -our druggists, other roots of 
