38  Mr.  hunter  on  the  Heaty  See. 
into  cold  water  to  thaw : they  appeared  at  firft,  for  fome 
days,  to  be  very  well;  but  that  part  of  the  tail  which 
had  been  frozen  had  not  the  natural  colour,  and  the  fin 
of  the  tail  became  ragged.  About  three  weeks  after  afurr 
came  all  over  the  frozen  part;  the  tail  became  lighter,  fo 
that  the  fifh  was  fufpended  in  the  water  perpendicularly, 
and  they  had  almoft  loft  the  power  of  motion;  at  laft 
they  died.  The  water  in  which  they  were  kept  was 
New  River  water,  fhifted  every  day,  and  about  ten  gal- 
lons in  quantity. 
I made  fimilar  experiments  upon  an  order  of  animals 
ftill  inferior,  viz.  common  earth  worms. 
I firft  froze  the  whole  of  an  earth  worm  as  a ftan- 
dard ; when  thawed  it  was  perfectly  dead. 
I then  froze  the  anterior  half  of  another  earth  worm ; 
but  the  whole  died. 
I next  froze  the  pofterior  half  of  an  earth  worm ; the 
anterior  half  lived,  and  feparated  itfelf  from  the  dead 
part. 
As  I had  formerly  in  making  my  experiments  upon 
animals,  relative  to  heat  and  cold,  made  fimilar  ones  on 
vegetables,  and  had  generally  found  a great  fimilarity 
between  them  in  thefe  refpedts,  I was  led  to  purfue 
the  fubjedl  upon  the  fame  plan ; but  I was  ftill  farther 
induced  to  continue  my  experiments  upon  vegetables,  as- 
I ima- 
