THE COMMONWEALTH SERUM LABORATORIES. 
a 
The sertm’ expressed from the clotted plasma ‘is filtered: through 
Lipscombe and Pasteur-Chamberland filters, in the filtration laboratory. 
It is then ready for issue. aaa ice} 
Much of the plasma which is placed in cool storage is concentrated, 
and in this case the plasma is not clotted, but the pseudo-globulin frac- 
tion is separated from the other fractions of the protein of the serum in 
the Bio-chemical Laboratory. 
The bottling room is fitted with hermetically-sealed windows, and is 
supplied with filtered sterile air. Products being bottled are, there- 
fore, not endangered by the presence in the atmosphere of any con- 
taminated dust. ; 
‘FILTERING APPARATUS (SERUM DEPARTMENT). 
ay 
} . 
In the apparatus room, bleeding bottles, filtering apparatus, and: the 
like are prepared for use, not only in the Serum Department, but also 
in all the other laboratories. Pan Mobis ease ies ey se mee pee 
Vaccine Department.—A large rogm on the first floor of ‘the south 
wing is occupied by the Vaccine Department, which is equipped with, all 
the necessary appliances of the modern bacteriological laboratory. 
Within the room a special cabinet has been built, which it is pro- 
posed to supply with sterile air. The more difficult operations of 
bacteriological technique, such as the production of ‘Noauchits vaccine, 
from the testicles of rabbits, may then. be carried out there with every 
chance of success. Reacher oc 
423 
