FLUIDEXTRACTS 33 



dred grams, and two hundred grains, respectively. Moisten the first 

 portion of the drug (500 Gms.) with a sufficient quantity of the 

 prescribed, menstruum to render it evenly and distinctly damp and 

 to maintain it so aft«r maceration for six hours in a tightly-covered 

 container. Then pack it in a cylindrical percolator and add enough 

 menstruum to saturate the powder and leave a stratum above it. 

 When the liquid begins to drop from the percolator, close the lower 

 orifice, and, having closely covered the percolator, macerate for forty- 

 eight hours and then allow the percolation to proceed slowly, grad- 

 ually adding more menstruum. Eeserve the first two hundred mils 

 of the percolate and continue the process until the additional perco- 

 late measures fifteen hundred mils, the latter being collected in suc- 

 cessive portions of three hundred mils each. 



Moisten the second portion of the powdered drug (300 Gms.) 

 with a sufficient quantity of the percolate collected in the preceding 

 operation immediately after the reserved portion to render it evenly 

 and distinctly damp and to maintain it so after macerating for six 

 hours in a tightly-covered container. Then pack it in a cylindrical 

 percolator and macerate and percolate as directed for the first part 

 of the drug, using as menstruum the several portions of percolate 

 from the preceding operation in the order in which they have been 

 collected, and if this be insufficient, follow with some of the original 

 menstruum. Eeserve the first three hundred mils of percolate and 

 continue the process until the additional percolate measures eight 

 hundred mils, collecting the weaker percolate in successive portions 

 of two hundred mils each. 



Moisten the third portion of the powdered drug (200 Gms.) with 

 a sufficient quantity of the percolate collected in the preceding oper- 

 ation immediately after the reserve portion to render it evenly and 

 distinctly damp and to maintain it so after macerating for six hours 

 in a tigibtly-covered container. Then pack it in a cylindrical per- 

 colator and macerate and percolate as before, using as menstruum 

 the several portions of the percolate from the preceding operation in 

 the order in which they have been collected, and, if this be insuffi- 

 cient, follow with more of the original menstruum. Collect five hun- 

 dred mils of percolate and mix this with the two portions previously 

 reserved so as to make one thousand mils of finished fluidextract. 



When Type Process C is directed for fluidextracts which are 

 adjusted by assay to a definite alkaloidal standard, collect only four 

 hundred and twenty mils of percolate from the third portion of the 

 drug instead of the five hundred mils as directed above. Mix this 

 percolate with the two portions previously reserved, assay a portion 

 of the mixture and then adjust its volume, by the addition of the 

 menstruum directed, so that each one hundred mils of finished fluid- 

 extract will contain the prescribed amount of alkaloid. 



Type Process D. To one thousand grams of the ground drug 



