310  Editorial.  {AmjSmrn1, 
out  of  every  hundred,  fifteen  are  retained  if  they  come  from  localities  other 
than  Austria  or  Germany.    From  these  countries  twenty  specimens  are  reserved. 
The  list  offered  is  a  long  and  valuable  one,  and  would  evidently  afford  any 
botanist  an  excellent  opportunity  to  enlarge  his  herbarium  at  a  very  small 
expense. 
The  following  hints  in  regard  to  "  Drawings  for  Illustrations,"  from  Phar. 
Jour.  Trans.,  53,  860,  so  well  explain  the  subject,  that  they  are  here  reproduced 
in  full  : 
"The  simplest  and  most  generally  employed  method  of  illustrating  letter- 
press is  by  means  of  zinc  blocks  prepared  by  a  photographic  process  from  line 
drawings  done  with  pen  and  ink.  In  one  of  the  recent  Cantor  lectures  deliv- 
ered before  the  Society  of  Arts  by  Mr.  Henry  Blackburn,  it  was  pointed  out  that 
drawings  should  be  made  upon  bristol  board,  or  paper  with  a  similar  surface, 
with  black  or  Indian  ink,  that  will  dry  with  a  dull  surface,  and  a  pen  having  a 
medium  point.  The  drawings  should  consist  entirely  of  clean  and  sharp  lines, 
shading  by  means  of  washes  being  inadmissible.  Photographs  and  shaded  draw- 
ings are  reproduced  by  a  more  elaborate  process,  which  does  not  yield  equally 
satisfactory  results  in  rapid  printing.  In  most  cases  it  is  desirable  to  prepare 
the  drawings  on  a  larger  scale  (one-third  to  one-half  larger)  than  it  is  proposed 
to  reproduce  them.  Sufficient  allowance  must  then  be  made  for  the  result  of 
reduction,  some  lines  being  necessarily  thickened,  whilst  the  amount  of  reduc- 
tion intended  should  be  clearly  indicated  in  the  margin.  In  this  way  it  is  pos- 
sible by  means  of  a  simple  line  drawing  to  efficiently  illustrate  the  text  of  an 
article  or  paper — whether  merely  describing  a  piece  of  apparatus  or  other  object 
of  appreciable  size,  or  representing  the  magnified  image  of  minute  structures 
as  seen  under  the  microscope — and  contributors  to  the  Journal  are  requested  to 
adopt  this  plan  when  illustrations  are  necessary  to  elucidate  the  text  of  their 
contributions." 
It  is  the  desire  of  the  editor  of  the  American  Journal  of  Pharmacy  to  have 
illustrations  accompany  the  text,  wherever  they  will  aid  in  explaining  it,  and 
clear  photographs  will  be  accepted  and  reproduced.  It  is  much  better,  how- 
ever, to  have  a  good  artist  first  make  line  drawings  from  these  photographs. 
On  Thursday  evening,  May  3d,  several  hundred  visitors  at  the  Philadelphia 
College  of  Pharmacy  examined  a  display  of  the  specimens  from  the  Martindale 
Herbarium. 
The  museum,  library  and  reading-room  were  filled  with  improvised  tables,  so 
arranged  that  the  specimens  placed  thereon  were  of  just  the  right  height  and 
angle  to  be  observed  by  the  visitor  while  standing  or  walking.  In  this  way  the 
largest  possible  number  of  specimens  were  viewed  during  the  time  of  the 
exhibition,  from  8  until  11  o'clock. 
During  the  two  remaining  days  of  the  week  the  pupils  of  a  number  of  schools 
in  Philadelphia  and  vicinity  availed  themselves  of  the  opportunity  to  see  this 
collection. 
LAVOISIER. 
May  8th  was  the  hundredth  anniversary  of  the  death  of  Lavoisier.  His 
tragic  death  at  the  hands  of  the  rabble  of  Paris,  and  the  active  part  he  took 
during  life  in  founding  many  of  our  chemical  laws,  have  made  him  one  of  the 
