Am.  Jour,  Ptiarm.  \ 
February,  1899.  I 
Notes  and  News. 
vii 
definite  symptoms  aud  a  definite  geographical  distribution.  One  evidence  that 
the  disease  is  not  due  to  heat  is  found  in  the  fact  that  people  in  certain  regions 
or  under  artificial  conditions,  work  in  temperatures  far  higher  than  exist  in 
places  where  sunstroke  frequently  occurs,  without  suffering  from  the  disease. 
True  sunstroke  seems  to  be  confined  to  certain  low-lying  countries,  where  the 
climate  is  moist,  and  absent  from  more  elevated  and  dry  regions.  The  author 
compares  the  bacterium  with  that  of  tetanus,  claiming  that  it  lives  in  the 
soil,  and  is  carried  into  the  system  with  dust.—  The  American  Naturalist,  Vol. 
XXXII,  p.  533. 
Bacteria  in  Ground  Water. — The  readiness  with  which  bacteria  may  be 
conveyed  to  wells  in  sub-surface  water  has  been  shown  in  some  experiments 
made  on  the  Rhine  near  Strasburg,  by  Prof.  E.  Pfuhl.  Two  kinds  of  bacteria, 
neither  occurring  in  the  Rhine,  were  placed  in  a  shallow  pit  nearly  full  of  water 
and  in  one  hour  one  species  had  passed  through  24  feet  of  gravel  to  a  second 
pit,  the  other  species  appearing  in  the  second  pit  within  two  hours. — Micro- 
scopical Journal,  1898,  p.  205. 
Preservation  of  Eggs.— A  note  is  given  (in  the  Landw.  Centralbl.  Posen., 
*&97i  p.  209)  on  the  successful  preservation  of  eggs  by  burying  them  in  peat 
dust.  J.  H.  Thierot  (U.  S.  Consular  Reports,  1897,  p.  563)  gives  a  report  of 
tests  made  in  Germany  of  twenty  methods  of  preserving  eggs.  The  most  satis- 
factory methods  were  (1)  to  varnish  eggs  with  vaseline  and  preserve  in  lime- 
water,  or  (2)  to  use. a  solution  of  water-glass.  The  latter  to  be  preferred,  as  the 
■coating  of  the  eggs  with  vaseline  takes  considerable  time,  and  the  lime-water  is 
likely  to  give  them  a  disagreeable  odor  and  taste.  There  is,  however,  one 
drawback  with  eggs  preserved  in  a  solution  of  water-glass,  viz. :  that  the  shell 
easily  bursts  in  boiling  water.  This  may  be  avoided  by  cautiously  piercing  the 
shell  with  a  strong  needle. 
■  Pasteurization  of  Milk.— C.  E.  Marshall  (Mich.  Sta.  Bui.,  1898,  p.  21) 
has  made  some  experiments  on  the  micro-organisms  that  are  found  to  be 
resistant  to  pasteurization. 
In  each  of  twenty-six  experiments  two  bottles  of  the  pasteurized  milk  and 
two  bottles  of  the  same  milk  unpasteurized  were  taken  as  samples,  one  set 
being  tested  for  acidity  and  the  resistant  bacteria,  and  the  other  set  being  kept 
until  it  spoiled.  The  data  for  these  samples  are  given.  From  the  pasteurized 
milk  thirty-nine  varieties  were  isolated  and  studied.  The  characteristics  of 
nineteen  varieties  are  given,  since  these  are  believed  to  be  representative  of  the 
whole.  The  source  of  these  resistant  bacteria  was  studied  by  making  numer- 
ous plate  cultures  of  the  dust  in  the  air  of  the  stable,  the  animal,  etc.  From 
these  bouillon  cultures  were  made  of  the  different  kinds  of  bacteria,  and  these 
cultures  were  pasteurized.  Of  those  which  resisted  pasteurization  two  were 
from  the  dust  of  the  stable,  two  from  the  dirt  from  the  cow,  one  from  the  dairy, 
and  three  from  the  first  part  of  the  milking. 
As  to  the  effect  of  these  resistant  bacteria  on  the  milk  after  pasteurization, 
it  was  found  that  some  only  curdled  the  milk,  some  peptonized  the  casein,  some 
did  both,  while  others  produced  no  perceptible  change  in  the  milk.  1 
A  special  experiment  on  the  thermal  death  point  of  tubercle  bacilli  showed 
that  heating  the  milk  containing  them  at  68°  C.  for  twenty  minutes  destroyed 
the  bacilli,  so  that  the  milk  had  no  injurious  effect  when  inoculated  into  guinea 
