ANNOUNCEMENT. 
The  Annual  Courses  of  Instruction  in  the  College  commence 
on  the  first  lecture  day  in  October,  at  7 J  o'clock,  P.  M.,  and 
will  be  continued  tri-weekly,  on  Monday,  Wednesday  and 
Friday  of  every  week,  at,  seven  and  eight  Q'clock,  P.  M.,  until 
the  close  of  February.  . 
In  this  Course  will  be  presented  a  systematic  view  of  the 
science,  its  improvements  and  condition  up  to  the  present  time. 
Commencing  with  caloric,  its  laws  and  principal  applications, 
this  will  be  followed  by  affinity,  the  laws  of  chemical  combina- 
tion and  chemical  notation. 
The  consideration  of  the  non-metallic  elements  will  be  in  the 
order  of  their  value  and  abundance ;  the  compounds  with  any 
previously  described  being  noticed  in  connection  with  each, 
unless  of  an  organic  nature.  Commencing  with  oxygen,  then 
follows  hydrogen,  nitrogen,  sulphur,  chlorine,  iodine,  bromine, 
phosphorus,  carbon,  boron,  silicon,  and  their  combinations  with 
each  other,  nitrogen  and  hydrogen  excepted. 
The  metals  will  be  classified  according  to  the  nature  of  the 
more  important  compounds  they  form  with  oxygen.  Basifiable 
forming  alkalies,  potassium,  sodium,  lithium,  (and  here  the  com- 
pounds of  nitrogen  and  hydrogen,  as  forming  the  quasi-metal 
ammonium,  will  be  noticed  :)  forming  alkaline  earths,  barium, 
strontium,  calcium,  magnesium ;  forming  earths,  aluminium, 
&c. ;  forming  ordinary  bases,  iron,  manganese,  chromium,  &c., 
zinc,  copper,  lead,  bismuth,  &c.  Acidifiable :  bismuth,  tin, 
arsenic,  antimony,  &c.  Finally,  an  intermediate  class,  forming 
weak  acids  or  bases,  decomposable  at  a  red  heat*  mercury, 
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