28 
The  rectangular  pseudo-mycelian  forms 
are  formed  by  4  or  5  cells,  united  in  a 
chain.  The  size  of  the  elements  is  marked 
by  septa  of  varying  thickness.  Between  these 
the  cells  present  one  and  sometimes  two 
granules.  This  may  be  seen  in  the  cen¬ 
ter  of  the  aglomerations  of  the  round  or  po¬ 
lygonal  cells.  Almost  always  the  material  from 
the  tonsils  shows  yeast-forms,  which  are 
identical  to  those  of  the  sputum.  The 
mycelian  form  here  is  rare  and  ascospores 
were  never  seen.  No  tonsiltissue  suitable 
for  sections  was  obtained.  The  intercurrent 
infections  by  the  very  rich  and  varying  flora 
of  the  mouth  interfere  with  the  interest  one 
would  find  in  these  lesions.  We  believe  that, 
once  the  tonsils  affected  and  penetrated  by 
the  fungus,  the  Oïdium  brasiliense  invades  the 
lymphatic  glands,  as  also  happens  with 
KOCH’s  bacillus. 
In  section  of  lymphglands  the  mycelian 
texture  is  much  like  that  of  the  lung.  This 
verification,  made  in  deep-lying  glands  of 
various  systems  and  repeated  in  ail  details 
by  experiments,  is  a  convincing  proof.  The 
abundance  of  the  Oidium  in  these  tissues  is 
remarkable.  We  found  the  same  conditions  in 
animals.  In  the  lungs  of  monkeys  ( Hapale , 
Alouata)  the  forms  resemble  those  of  the 
human  lung.  We  obtained  lesions  in  the 
tracheo-bronchial  and  mesenteric  glands 
of  some  Callithrix  and  rabbits.  The  fungus 
here  shows  an  accentuated  polymorphism.  In 
further  studies  we  may  treat  this  matter  with 
more  details.  For  the  present  it  is  enough  to 
affirm  that  the  Oidium  brasiliense  is  found 
with  these  features  in  lungs,  lymphglands 
and  tonsils. 
Recapitulation  of  the  lesion. 
Our  post-mortem  examination  on  pati¬ 
ents,  victims  of  oidiosis,  wholly  justify  our 
conception  of  the  evolution  of  the  lungdis- 
ease,  formed  from  clinical  observation. 
Macroscopical  lesions. 
The  general  aspect  of  the  dead  bodies 
indicates  an  extreme  emaciation.  We  give 
copies  of  the  records  of  two  post-mortem 
examinations,  which  are  clear  enough  tc 
avoid  any  misunderstanding.  Omitting  unim¬ 
portant  details,  we  limit  ourselves  to  the  es¬ 
sencial  points. 
Post-mortem  examination  N.  1. 
Made  on  19  —  7  —  915  between  2  and  3 
hours  after  death. 
External  inspection'.  Male,  colour  black, 
probable  age  30  years.  Extreme  emaciation. 
Complete  rigor  mortis.  No  spots  on  the 
surface  of  the  body.  No  liquid  escaping  from 
the  natural  cavities.  Pupils  equally  dilatated. 
Internal  organs  :  The  central  nervous 
system  (complete)  apparently  normal;  sec¬ 
tions  of  the  organe  do  not  show  anything 
abnormal. 
Trachea  :  full  of  abundant  clammy  mucus. 
Tracheo-bronchial  glands  swollen,  forming 
a  chain.  Remarkable  gland  agglomera¬ 
tion  on  an  average  level  with  the  line, 
uniting  posteriorly,  the  inner  ends  of  the  cla¬ 
vicles  ;  to  the  right  of  the  median  line  and 
in  front  of  the  vasculo-nervous  bundle  of  the 
neck  and  of  the  trachea  is  a  striking  conglo¬ 
meration  of  lymphglands.  One,  of  them  is 
notable  by  its  size,  equal  to  a  large  nut,  and 
its  grey  colour.  The  pneumogastric  nerve, 
behind  these  glands,  is  compressed  and  des- 
viated  in  a  large  curb.  The  glandular  volume 
was  remarkably  increased  in  the  direction  of 
the  pulmonary  hilus.  The  consistency  of  the 
glands  is  hard,  firm,  even  ligneous.  They 
are  grayish-white  on  section.  No  caseous 
substance. 
On  the  right  the  tracltea  is  compressed 
by  one  of  these  masses.  The  glands  of  the 
neck  are  swollen. 
Left  lung  strongly  adherent  to  the  thoracic 
wall,  has  to  be  detached  bv  scissors. 
There  are  adhérences  on  all  the  faces, 
making  the  extraction  difficult.  Colour  dark- 
gray,  with  reddish  rays.  Complete  hépatisa¬ 
tion.  Adhérences  between  the  lobes.  Large  and 
small  bronchi  full  of  purulent,  reddish-yel¬ 
low  fluid.  From  the  surface  of  section  es¬ 
capes  a  purulent  reddish  fluid.  Apex  with  an 
oval  cavern  of  about  2  cc.  at  its  largest, 
