406 
MINUTES  OF  THE 
T  Query  9th. — Syrup  of  Senega  is  sometimes  cloudy  and  semi-gelatinous 
in  consistence,  even  when  the  officinal  directions  are  followed,  due 
probably  to  pectin.    How  may  this  be  uniformly  avoided  in  practice. 
Accepted  by  C.  Louis  Diehl,  of  Louisville,  Ky. 
Query  10th. — The  past  and  present  history  of  the  turpentine  trade,  in- 
cluding the  production  of  turpentine  and  the  distillation  of  its  oil,  in  the 
United  States? 
Accepted  by  J.  M.  Holland,  Jackson,  Midi. 
Query  11th. — Many  volatile  oils  rapidly  deteriorate  by  atmospheric 
oxidation  and  become  commercially  worthless.    How  far  is  it  possible  to 
restore  these  by  redistillation  or  other  means  to  their  original  condition, 
and  does  the  oxygenation  affect  the  whole  mass  or  a  part  only  ? 
Accepted  by  T.  B-  Dorsey,  Dresden,  Ohio. 
Query  12. — What  is  the  best  method  of  preserving  Lemon  Juice  so  as 
to  retain  its  good  flavor  and  appearance  during  that  part  of  the  year 
when  lemons  are  scarce  ? 
Accepted  by  Henry  Sweet,  of  Chicago. 
Query  13th. — Oleum  Theobroma ;  an  essay  on  this  fat  as  regards  its 
manufacture,  adulterations,  uses  and  commercial  history. 
Accepted  by  Henry  W.  Lincoln,  Boston,  Mass. 
Query  14th. — Extract  of  Hemlock  Bark,  (Abies  Canadensis);  what  is  its 
composition,  what  variety  of  tannic  acid  does  it  contain,  how  made,  and 
what  are  its  merits  as  a  medicinal  astringent  compared  with  Kino;  Cate- 
chu and  Krameria  ? 
Accepted  by  William  Procter,  Jr.,  Philada. 
Query  15th. — The  experiments  of  Charles  Bullock  render  it  very 
doubtful  whether  Yeratria  exists  in  Yeratrum  Yiride,  as  has  been  stated  ; 
but  that  two  well-marked  alkaloids  having  different  properties  replace 
it.  Can  the  second  or  resin-like  alkaloids  of  Mr.  Bullock  be  obtained  in 
a  purer  and  better  defined  form,  is  the  sedative  power  of  the  drug  chiefly 
due  to  it,  and  what  relation  does  the  other  alkaloid  bear  to  Yeratria  ? 
Referred  by  the  Association  to  Charles  Bullock,  of  Philada. 
Query  16. — Can  the  existing  pharma3eutical  preparations  of  Ergot  be 
improved  if  studied  in  the  light  offered  by  W.  T.  Wenzell  (see  Amer.  Jour. 
Pharm.,  vol.  xxxvi.  p.  193),  and  can  a  permanent  solid  preparation  of  Er- 
got be  made  representing  its  alkaloids  in  a  concentrated  form  ? 
Accepted  by  Jas.  W>  Mill,  Chicago,  III. 
Query  17. — Is  not  the  present  formula  for  Tincture  of  Chloride  of  Iron 
obnoxious  to  criticism  as  regards  the  permanence  of  its  product  ? 
Referred  to  E.  Heydenreich,  Brooklyn,  N.  Y. 
Query  18. — Can  any  improvement  be  suggested  in  Syrupus  Lactucarii 
U.S.  P.  1860  ? 
Accepted  by  Albert  E.  Ebert,  Chicago,  III. 
Query  19. — A  process  for  isolating  Aloin  in  a  crystalline  state,  which 
