Am.  Jour.  Pharm. 
April,  1892. 
Flora  of  Northern  Ohio. 
211 
in  ether  was  isolated,  and  this  furnished  a  crystalline  hydrobromide 
which  corresponded  with  the  salt  of  anhydro-aconitine.  The  auro- 
chloride  melted  at  141  °,  and  is  thus  proved  to  be  anhydro-aconitine 
aurochloride.  The  alkaloid  produced  the  physiological  action  char- 
acteristic of  anhydro-aconitine  (C33H43NOn),  and  was  identical  with 
that  obtained  by  the  dehydration  of  aconitine.  Since  the  anhydro- 
compound  combines  with  water  to  form  aconitine,  this  result  con- 
stitutes a  partial  synthesis  of  the  natural  alkaloid,  and  proves  it  to 
be  monobenzoyl  aconine. 
The  examination  of  the  action  of  various  reagents  on  aconine 
has,  so  far,  not  led  to  any  important  results.  Nitrous  acid  fails  to 
attack  it.  The  principal  product  of  its  oxidation  by  alkaline  per- 
manganate is  oxalic  acid.  Attempts  to  isolate  an  addition  com- 
pound with  methyl  iodide  were  not  successful.  By  the  action  of 
methyl  iodide  on  aconitine,  a  crystalline  aconitine  methyl  iodide 
(C33H45N012,CH3I)  was  obtained  which  melts  at  2190  (corr.).  The 
aconitine  methyl  hydroxide  (C33H45N012CH3OH)  prepared  from  this 
compound  is  an  amorphous  base  whose  salts  do  not  appear  to  crys- 
tallize. A  further  study  will  be  made  of  this  compound  and  its 
physiological  action  will  be  investigated. 
ON  THE  FLORA  OF  NORTHERN  OHIO. 
BY  EDO  ClyAASSKN. 
{Concluded  from  p.  /70.] 
Not  many  days  was  the  botanist  at  home,  when  he  happened  to  read  in  the 
"Geological  Survey  of  Ohio"  communications  in  regard  to  the  presence  of 
lakes  and  ponds  in  the  interior  of  the  State  not  far  from  his  residence,  as 
well  as  notes  on  very  rare  and  remarkable  plants  growing  in  and  along  them . 
At  this  point  his  eyes  flashed,  and,  the  weather  being  fair,  he  started  early  the 
next  day  to  explore  also  these  renowned  localities.  Swamps  and  peatbogs  often 
border  these  lakes  and  ponds  ;  those  nearest  to  Cuyahoga  County  are  :  (1)  Strut- 
ton  Pond,  Geauga  and  Crystal  Lakes  ;  (2)  Silver,  Congress,  Cottage  Grove  and 
Chippewa  Lakes,  and  (3)  the  Twin  Lakes,  Lake  Pepin  and  Brady's  Lake,  of 
which  those  under  (1)  have  on  their  border  partly  peatbogs,  those  under  (2) 
swamps,  and  those  under  (3)  almost  everywhere  meadows.  According  to  this 
fact  the  botanist  will  find,  on  an  average,  most  of  the  rare  plants  in  (1)  more 
than  in  (2),  and  here  more  than  in  (3).  Although  he  had  ascertained  that  lakes, 
having  a  similar  soil  on  their  borders,  can  mostly  boast  of  the  same  species  of 
plants,  he  yet  had  to  acknowledge  that  most  of  them  have,  at  least  according 
to  his  explorations,  some  species,  peculiar  to  one  of  them  ;  for  instance,  to 
Geauga  Lake,  Calopogon  pulchellus,  R.  Br.,  Pogonia  ophioglossoides,  JVutt., 
Drosera  rotundifolia,  Linne,  Carex  retrorsa,  Schweinitz,  and  Riccia  fluitans, 
