36 
_By  Prof.  Maisch. 
The  principles  upon  whicli  pharmacognosy — to  the  pharma- 
cist one  of  the  most  important  branches  of  materia  medica — ■ 
will  be  tanght,  renders  a  knowledge  of  botany,  to  say  the  least, 
very  desirable.  The  importance  of  this  science  has  been  fnlly 
recognized  by  the  College,  by  confiding  to  the  Chair  on  Mate- 
ria Medica  the  duty  of  delivering  lectures  on  Botany  during 
the  spring  and  summer.  Though  as  yet  not  considered  obliga- 
tory, it  is  nevertheless  of  importance  to  the  student  to  embrace 
the  opportunity  of  obtaining  a  theoretical  and  practical  know- 
ledge of  this  science. 
The  course  will  consist,  until  further  notice,  of  lectures  on 
general  and  special  morphology,  organology,  and  a  concise 
review  of  systematic  botany,  embracing  the  characteristics  of 
those  natural  orders  and  genera  which  are  of  greatest  import- 
ance to  the  pharmacist.  For  the  present,  one  afternoon  of  each 
week  commencing  in  April,  will  be  devoted  to  these  lectures, 
and  to  excursions  into  the  country  surrounding  Philadelphia, 
affording  to  students,  besides  a  healthful  recreation,  the  best 
means  of  becoming  practically  acquainted  with  the  living 
plants. 
By  Prof.  Parrisli. 
This  will  commence  with  instructions  in  the  art  of  weighing 
and  me-asuring,  and  a  succinct  account  of  the  systems  of  weights 
and  measures  authorized  by  the  United  States  and  British 
Pharmacopoeias,  and  the  French  or  decimal  gystem.  Connected 
with  this,  the  subject  of  Specific  Gravity  will  claim  attention. 
The  manipulations  of  the  shop  and  laboratory, — powdering, 
sifting,  solut'ion,  filtration,  maceration,  percolation,  the  genera- 
tion, application  and  management  of  heat,  the  water  bath,  sand 
