EXTRACTS FROM EXCHANGES. 
705 
prepuce a cotton tampon is introduced to prevent the prolapse 
of the penis during the operation, whereby infection of the 
inguinal region is prevented. The anterior end of the prepuce 
is drawn forward by an assistant. The skin and the fascia un¬ 
der it, in the region of the external inguinal ring, is then cut 
about five to eight cm. in length, after which the hand is for¬ 
warded to the abdominal cavity, through the tendinous portion 
of the external oblique muscle of the abdomen. '1 he opening 
of the abdominal cavity is then proceeded with by the author 
according to the “ Danish ” method, which consists in the sepa¬ 
ration of the external oblique muscle, followed by the punctur¬ 
ing of the internal oblique by two fingers, in the direction of 
its fibres, about three cm. from the posterior border. In most 
cases it is necessary to enter the abdominal cavity with the 
whole hand. With the hand in the abdominal cavity the 
author feels for the vas deferens, which, when found, is easily 
followed to the testicle. The testicle is then drawn through 
the opening of the wound, the cord ligated, and, after the sepa¬ 
ration of the testicle, placed back in the abdominal cavity. In 
cases where the whole hand is introduced into the abdominal 
cavity the author generally packs the wound with gauze, which 
is held in place by suturing the skin. The gauze is removed 
three or four days after the operation. By packing the wound 
the healing of the external parts is retarded, but by this method 
prolapse of the abdominal organs is prevented. Out of 57 cases 
of cryptorchids so operated upon only 7 per cent, proved fatal, 
while 93 per cent, were cured .—(Veter in arms.') 
Experiments in Inoculations Against Texas Fever 
[By Ligniere , Alfort\. —E. proved that the infectious dis¬ 
ease of Argentina, which is known there as “ Tristeza,” is a 
form of Texas fever, which was first described by Smith and 
Kilborne. The cause of this infectious disease is a hsematozoon 
(pyroplasma bigemimmi). The disease is mostly transmitted 
by insects ; the mortality is very great, and adult animals sel¬ 
dom, if ever, recover ; one attack gives positive immunity. 
Eigniere published an extensive work on the etiology of this 
disease, the biology of the parasite, and the cases observed by 
him, and it is of great interest, containing numerous drawings 
and photographs in relation to this malady. But as this work 
was published before the investigations were finished, it does 
not contain the most important part as to whether L. succeeded 
before his departure from Buenos Ayres to procure an inocula¬ 
tion which would immunize the cattle against “Tristeza.” The 
