

EXAMINATION OF PASTEUR’S DOCTRINES ror 
with neutral infusion, the other two with un- 
neutralised infusion. A small quantity of pounded 
cheese was then added to one of each pair. A fifth 
retort was charged with unneutralised infusion 
— diluted with its bulk of water. As soon as each 
retort was charged, the open end of its beak was 
heated in the blow-pipe flame and drawn out. The 
drawn-out part was then severed, and the retort 
boiled over a Bunsen’s burner, after which it was 
kept in a state of active ebullition for five minutes. 
During the boiling, some of the liquid was frequently 
ejected from the almost capillary orifice of the retort. 
At the end of the period named it was closed by the 
blow-pipe flame, care being taken to continue the 
ebullition to the last. The success of the operation 
was ascertained in each instance by observing that, 
by wetting the upper part of the retort, the ebulli- 
tion was renewed. 
Three similar retorts were charged with the hay 
infusion, the specific gravity of which was 1005, and 
the reaction neutral. Of these, one contained the 
infusion diluted with its bulk of distilled water, the 
others being charged with infusion to which no 
addition had been made. ‘These three retorts were 
closed, after boiling, in exactly the same way as 
those containing turnip infusion. The eight retorts 
were placed, immediately after their preparation, in 
a water-bath, which was kept at a temperature of 
about 20. “; 
We met to examine the flasks on December 17, 
just three days after their preparation, Dr Bastian 
having previously expressed his anticipation that the 
