﻿114 
  A. 
  W. 
  BACOT. 
  — 
  THE 
  INFLUENCE 
  OF 
  TEMPERATURE, 
  

  

  18 
  eggs 
  of 
  batch 
  (o) 
  submerged 
  for 
  3 
  days 
  — 
  17 
  hatched 
  = 
  94 
  per 
  cent. 
  (Control, 
  

   100 
  per 
  cent, 
  hatched.) 
  

  

  19 
  eggs 
  of 
  batch 
  {k) 
  submerged 
  for 
  3 
  days 
  — 
  19 
  hatched 
  = 
  100 
  per 
  cent. 
  (Control, 
  

   100 
  per 
  cent, 
  hatched.) 
  

  

  11 
  eggs 
  of 
  batch 
  (j) 
  submerged 
  for 
  5 
  days 
  — 
  10 
  hatched 
  = 
  91 
  per 
  cent. 
  (Control, 
  

   100 
  per 
  cent, 
  hatched.) 
  

  

  Between 
  48° 
  and 
  50° 
  F. 
  

  

  20 
  eggs 
  of 
  batch 
  (I) 
  submerged 
  for 
  24 
  hours 
  — 
  16 
  hatched 
  = 
  80 
  percent. 
  (Control, 
  

   91 
  per 
  cent, 
  hatched.) 
  

  

  11 
  eggs 
  of 
  batch 
  (n) 
  submerged 
  for 
  3 
  days 
  — 
  11 
  hatched 
  =100 
  percent. 
  (Control, 
  

   100 
  per 
  cent, 
  hatched.) 
  

  

  Between 
  28° 
  and 
  32° 
  F* 
  

  

  9 
  eggs 
  of 
  batch 
  (p) 
  submerged 
  for 
  24 
  hours 
  — 
  9 
  hatched 
  = 
  100 
  per 
  cent. 
  (Control, 
  

   100 
  per 
  cent 
  hatched.) 
  

  

  8 
  eggs 
  of 
  batch 
  (p) 
  submerged 
  for 
  48 
  hours 
  — 
  7 
  hatched 
  = 
  87 
  per 
  cent. 
  (Control, 
  

   100 
  per 
  cent, 
  hatched.) 
  

  

  Lime-Water. 
  

  

  50 
  eggs 
  of 
  batch 
  (r) 
  were 
  submerged 
  in 
  lime-water 
  (saturated 
  solution 
  of 
  CaH^Cte) 
  

   for 
  46 
  hours 
  at 
  63° 
  F. 
  and 
  were 
  then 
  kept 
  at 
  75° 
  F. 
  ; 
  — 
  none 
  hatched. 
  (Control, 
  100 
  per 
  

   cent, 
  hatched.) 
  

  

  Ova 
  buried 
  in 
  sand. 
  

  

  Dry. 
  

  

  58 
  eggs 
  of 
  batch 
  (d). 
  The 
  pot 
  in 
  which 
  the 
  eggs 
  were 
  buried 
  was 
  kept 
  in 
  a 
  shed 
  

   without 
  doors, 
  open 
  towards 
  the 
  north 
  from 
  1st 
  to 
  5th 
  December, 
  1913. 
  Temperature 
  

   about 
  43° 
  to 
  47° 
  F. 
  The 
  eggs 
  were 
  then 
  transferred 
  to 
  the 
  laboratory, 
  at 
  from 
  60° 
  

   to 
  63° 
  F.— 
  58 
  hatched 
  = 
  100 
  per 
  cent. 
  (Control, 
  76 
  per 
  cent, 
  hatched.) 
  

  

  Saturated. 
  

  

  25 
  eggs 
  of 
  batch 
  (c). 
  The 
  pot 
  in 
  which 
  the 
  eggs 
  were 
  buried 
  was 
  kept 
  in 
  the 
  same 
  

   shed 
  as 
  mentioned 
  above 
  from 
  27th 
  November 
  to 
  1st 
  December. 
  Temperature 
  

   about 
  43° 
  to 
  50° 
  F. 
  The 
  eggs 
  were 
  then 
  transferred 
  to 
  the 
  laboratory 
  at 
  60° 
  to 
  63° 
  F. 
  

   — 
  24 
  hatched 
  = 
  96 
  per 
  cent. 
  (Control, 
  96 
  per 
  cent, 
  hatched.) 
  

  

  20 
  eggs 
  of 
  batch 
  (m). 
  The 
  pot 
  in 
  which 
  the 
  eggs 
  were 
  buried 
  was 
  kept 
  in 
  a 
  cool 
  

   room 
  at 
  from 
  47° 
  to 
  53° 
  F. 
  for 
  4 
  days. 
  The 
  eggs 
  were 
  than 
  transferred 
  to 
  an 
  incubator 
  

   at 
  75° 
  F. 
  — 
  19 
  hatched 
  == 
  95 
  per 
  cent. 
  (Control, 
  100 
  per 
  cent 
  hatched.) 
  

  

  14 
  eggs 
  of 
  batch 
  (m). 
  The 
  pot 
  in 
  which 
  the 
  eggs 
  were 
  buried 
  was 
  kept 
  in 
  a 
  cool 
  

   room 
  between 
  47° 
  and 
  55° 
  F. 
  for 
  one 
  week. 
  The 
  eggs 
  were 
  then 
  transferred 
  to 
  an 
  

   incubator 
  at 
  75° 
  F. 
  — 
  12 
  hatched 
  = 
  86 
  per 
  cent. 
  (Control, 
  100 
  per 
  cent, 
  hatched.) 
  

  

  Ova 
  set 
  in 
  plaster. 
  

  

  25 
  eggs 
  of 
  batch 
  (s) 
  were 
  carefully 
  detached 
  from 
  the 
  sides 
  and 
  bottom 
  of 
  the 
  box 
  

   and 
  cloth 
  on 
  which 
  they 
  had 
  been 
  laid. 
  The 
  eggs 
  were 
  then 
  scattered 
  on 
  to 
  a 
  very 
  

  

  *The 
  water 
  was 
  frozen 
  round 
  the 
  eggs. 
  

  

  