262 
have  two  generations  a year.  The  acetylene  light,  une- 
qualled in  power,  is  not  blown  out  by  wind,  though  burning 
without  chimney  glass,  and  ensures  great  success  to  lamp 
traps,  now  largely  used  on  the  continent  to  exterminate  the 
flying  pests.  The  agriculturists  and  vine-growers  annihi- 
late butterflies  from  caterpillars  devouring  leaves,  roots, 
grapes,  turnips,  fruits,  flowers,  and  all  harvests  just  before 
the  laying  time.  The  experiments  carried  on  by  professors 
give  2,000  moths  (half  females)  killed  in  a night  with  a 
single  lamp  (Academy  des  Sciences  Report).  The  lamp, 
strong,  and  simple  to  clean,  gives  20  to  35  candle  power 
during  6 hours,  at  an  expense  of  \\d.  per  night,  being 
immersed  in  a basin  of  water  covered  by  a him  of  petroleum 
oil,  the  visiting  insects  in  their  diving  flight  drown  them- 
selves. This  efficient  way  superseding  the  old  tedious 
methods  of  fumigation,  or  sprinkling  of  dangerous  liquids, 
has  proved  the  most  rapid  and  cheapest  means  to  protect 
the  crops  from  thousands  of  insects.  It  is  indeed  a good 
investment.  All  the  noxious  insects  being  nocturnal  this 
method  can  be  applied  to  all  flies  and  mosquitos  found  pro- 
pagating contagious  diseases,  malaria  pest,  or  troubling 
domestic  animals.  Moreover  these  lamps  are  used  all  the 
year  for  lighting  yards,  cellars,  stables,  cross-roads  and 
night  works.” 
Indian  Gardening  and  Planting. 
RUBBER  PLANTING  IN  MEXICO. 
(A) 
This  Company  the  “La  Zacualpa”  have  issued  in  pamphlet  form 
a report  by  E.  S.  VAN  COURT,  of  Oakland,  California,  a stock- 
holder who  recently  visited  the  plantation.  He  states  that  he  saw 
three  7 year  old  trees  yield  6i  lbs.  of  latex  at  one  tapping:  five 
1 1 year  old  trees,  said  to  have  been  tapped  several  times  within 
twelve  months,  yielded  in  20  minutes  enough  latex  to  make  2^  lbs. 
of  rubber.  Mr.  VAN  COURT  considers  the  Castilloa  elastica  very 
tenacious  of  life  where  trees  had  been  cut  down,  shoots  at  once 
sprang  up  from  the  stumps,  and  where  a tree  had  blown  down, 
leaving  most  of  the  roots  exposed,  a number  of  shoots  had  grown 
up  from  the  trunk.  Mr.  O.  H.  Harrison,  manager  of  the  estate, 
is  mentioned  as  being  at  work  upon  a machine  for  tapping  the 
trees,  which  will  do  less  harm  to  the  trees  than  tapping  with  the 
“machete,”  while  the  opening  made  in  the  bark  will  permit  the 
latex  to  flow  more  freely  than  where  trees  are  tapped  by  the  old 
method. 
(B) 
A committee  of  bondholders  who  visited  this  plantation,  the  Mexi- 
can Mutual  Planters’  Co,  recently  reported  on  the  progress  of  the 
various  cultures  there,  the  ( hief  of  which,  to  date,  is  coffee.  There 
