Method  of  tanning  Leather.  i rg 
not  appear  ftrange,  that  thefe  improvements  fhould  have 
been  made  by  a perfon  of  the  medical  profeffion  : indeed, 
they  took  their  rife  from  a feries  of  experiments  carried 
on  purely  for  medical  purpofes  (the  very  fame  that  con- 
firmed me  in  the  opinion  that  infufion  of  malt  would 
cure  the  fea  fcurvy)  and  any  perfon  who  will  look  into 
the  account  of  thofe  experiments,  will  readily  underftand 
the  theory  of  the  new  method  of  tanning (a> . 
It  would  be  trefpaffing  on  the  time  of  the  Society,  to 
enter  into  any  detail  of  the  circumftances  that  firft  in- 
duced me  to  think  of  this  matter,  or  to  give  a hiftory  of  the 
progrefs  of  my  experiments,  which  at  firft  were  made  at 
home,  and  with  little  pieces  of  raw  leather : it  is  fuffi- 
cient  to  fay,  that  the  efficacy  of  this  method  has  been 
fully  proved  by  the  experience  of  near  ten  years  (during 
which  I have  thought  proper  to  keep  it  fecret)  and  I 
now  bellow  it  to  the  public. 
I am,  8cc. 
(a)  See  the  Effay  on  the  diffolvent  Power  of  Quickfilver,  among  the  Expe?- 
ximental  Effays  on  Medical  and  Philofophical  Subje&a. 
In- 
