414 
D. E. SALMON. 
betw een the hands ; the quantity of liquid obtained is always more 
than is required for the inoculations. This is put in a saucer or bowl, 
and allowed to stand a short time, to allow any solid matter to settle to 
the bottom , on.no account should it be allowed to undergo any altera¬ 
tion. The animal to be inoculated is held by the head 5 the hair [is 
cut from one side of the end of the tail—habitually the right—then 
the skin is incised with the bistoury to a length of one or two centi¬ 
metres (i to f of an inch). With a teaspoon some of the upper part 
of the virus is taken, so as not to disturb the solid matter at the bot¬ 
tom ; the liquid is placed in the wound made at the end of the tail, 
and this is held up for one or two minutes by an assistant, to allow the 
absorption of the virus. The others are then inoculated in the same 
manner.” 
He states as the advantages of this process, that there is less risk 
of getting solid poitions of the lung in the liquid ; that a mixture of 
all the liquids in the organ are obtained (he thinks that some of these 
are inert) , that the instrument is not charged with solid matter, as is 
the case where it is first plunged into the lung and then into the ani¬ 
mal s tail; that, as there is more liquid than is absorbed, when the tail 
is diopped this fails to the ground, washing away any solid matter that 
may by chance have found its way into the wound. This solid matter, 
he says, not being absorbed in the fresh state because of the size of its 
particles, becomes putrid, and poisons the organ in which it is placed, 
and, finally, the animal itself. 
Mr. Gamgee s method for obtaining the virus may be preferred by 
some. He says : “ The selection of proper virus should be intrusted 
to veterinarians, who can detect the various stages of the disease. It 
is during the first stage of a mild case that the interlobular tissue of 
the lung is found distended with a yellow gelatinous serum, which is 
fluid so long as the lungs are hot, and is not readily contaminated by 
other inflammatory products and blood. When a large portion of lung 
has been so far consolidated as to present an almost uniform dark red 
or purplish color, it should be discarded, and especially in cases where 
a piece of the organ has become gangrenous and detached, or where 
liquid in the cavity of the chest and around the lungs is decidedly 
fetid- ... I he lung is placed on a tolerably wide strainer, or bits 
of wood, over a clean stoneware, glass or porcelain dish or bowl ; it is 
cut in various directions, and a stout piece of cloth or flannel is placed 
over the whole to confine the heat, and prevent dust from falling on 
the lung or liquid. It is better to place the dish or bowl over a 
