INTRODUCTION OF EUROPEAN ANIMALS INTO AUSTRALIA. 209 
has poisonous qualities. I must add that, sometimes, by 
insufflating the lungs during and some time after an injection 
of blood charged with carbonic acid, we may restore life to 
animals who have died in convulsions in consequence of the 
injection. 
If the quantity of blood charged with carbonic acid is too 
small, the animal will not die, but it will present phenomena 
of poisoning to a greater or less degree; thus with a horse, 
which was vigorous, although ill, at Alfort, I injected the 
blood of three large fowls (about 120 to 125 grammes) 
w ithout causing death; there w^as only a temporary accele¬ 
ration of the movements of the heart and respiratory efforts, 
with some symptoms of pain and oppression. Nevertheless 
the animal died within five days after the operation. 
When we compare the phenomena of a complete asphyxia 
with those which show themselves so quickly after an injec¬ 
tion of blood charged w ith carbonic acid, w ? e find that they 
are precisely similar to each other, with this difference only, 
that they are more violent in transfusion than in asphyxia. 
It appears, in the two cases, that the phenomena in question 
depend on poisoning by carbonic acid. 
Conclusions .— 1st. The blood of a vertebrate animal of one 
species is not a poison for vertebrata even of the remotest 
species. 
2d. The poisonous action of the blood of an animal in¬ 
jected into the vessels of an individual of another species 
depends principally, when it exists, on the presence of carbonic 
acid in sufficiently considerable quantities.— Comptes Rendus . 
THE INTRODUCTION OF EUROPEAN ANIMALS INTO 
AUSTRALIA. 
The extended introduction of useful animals into our 
Colonial possessions, occupies, we are glad to perceive, a 
large share of public attention, and will, we hope, lead to 
ultimate beneficial results. 
The columns of the Times , which are usually available 
during the Parliamentary recess for the discussion of topics 
of social and general interest, have recently been made use of 
by Mr. Edward Wilson, of Melbourne, wfflo, in a very sensible 
letter, brings prominently forward the importance of the 
introduction and diffusion of European animals over the 
Australian continent and islands. Without following Mr. 
