254 QUEENSLAND AGRICULTURAL JOURNAL. [1 Ava., L901, 
blackish-red; the blood serum has assumed a reddish-brown tint; the biood, 
exceedingly clear and red on exuding from the bloodvessels, quickly darkens when 
in contact with the air, and the froth obtained by agitation at the time of 
defibrination, has a very marked yellow tinge. The animal has diarrhea; the 
excrements, which are yellow on leaving the intestine, soon afterwards become russet- 
brown. ‘The animal persistently lies down. ‘The hematozoa are numerous in the 
corpuscles—20 to 25 per cent. ‘There are scarcely 31,000 corpuscles per m.m.c. (there 
is often not a single corpuscle in the microscopic field). This is the lowest number I 
have ever observed. ‘The blood smeared on a slide as soon as it exudes, showed 
well-scattered corpuscles, as if a highly-diluted solution had been made. At 10 p.m. 
the beast died. 
Autopsy—Muscles, normal; capillaries distended with blood, very few in the 
connective tissue; spleen enormous, firm, and black; liver enlarged, yellowish on 
section; bile grumous (clotted); kidneys extremely dark, friable, capsule containing a 
slight yellowish cedema; urine, reddish-brown; mucous membrane of the rennet bag and 
of part of the intestine slightly violet-coloured ; the contents of the intestines principally 
liquid ‘bilious substances; blackish blood clots are found in the cecum; some petechie 
are seen on the mucus membrane of the rectum. On the peritoneal serous membrane, 
which covers the digestive tube, numerous small hemorrhagic centres are observed. 
The lymphatics are infiltrated, seldom with hemorrhagic areas. The lungs are 
healthy. Numerous red spots are seen on the heart. On the endocardiun there 
are also spots, but deeper and blackish. The blood reddens by contact with the air, 
then turns black; it forms a very attenuated clot, almost entirely fibrinous. The 
red blood corpuscles and those of the organs contain piriform and round hematozoa 
which are especially numerous in the cardiac muscle and in the kidneys.* 
2.—VIRULENT DISEASE OF RAPID EVOLUTION, TERMINATING IN DEATH 
(Prate XIT.) 
Bullock No. 129, Cross-bred Durham.—A ge, 3 years. 
On June 5th Linject into this animal, per jugular, 10 ¢.c. of very virulent blood. 
Its present temperature is 38°6 U., and [ count 8,200,000 corpuscles per m.m.e. 
June 6.—Temp. 39°1 C. No apparent change in the general condition of the 
subject ; number of corpuscles, 8 350,000. An examination of the blood already 
reveals a few scattered Piroplusma. 
June 7.—Temp. 38°7. ‘There is, as yet, nothing worthy of note; the appetite: 
is good; there is a little constipation. Number of corpuscles, 8,339,000. There 
is uo difficulty in detecting Piroplasma bigeminum in the blood. ‘The blood 
serum is of normal colour. 
June 8.—Temp. 39° C. This slight excess of temperature does not coincide 
with the condition of the animal, which has undergone a great change since the 
previous evening. It is depressed, often lies down, eats very little; focal matter, 
scanty, very hard, reddish and streaked with blood. The muzzle and conjunctival 
membrane have rapidly become pale. The urine and blood serum are of a deep red 
colour. Respiration and pulsation have become accelerated. 
The number of corpuscles has fallen to 1,829,000 per m.m.c., which amounts to: 
a decrease of 6,500,000 corpuscles. This extraordinary decrease, occurring within 
twenty-four hours, is the greatest that I have ever observed in all my experience. 
A great number of hematozoa are found in the corpuscles, and some of them are 
free. 
June 9.—Temp. 40°4. ‘The sick animal is now continually lying down; it takes 
neither food nor drink: it has diarrhoea, and its excrements are yellowish-green ; the 
urine is reddish-brown or coffee coloured. When it is forced to rise, it stands with 
drooping head, the eyes widely open, the mouth full of foam ; it soon lies down again. 
I can only find 106,950 red corpuscles per m.m.c.; the hematozoa are more numerous 
than on the previous evening; 30 to 40 per cent. of the corpuscles are infected. Many 
micro-organisms are free. 
At 11 p.m. the breathing is much accelerated and spasmodic (jerky) ;_ the animal 
tries to breathe through its mouth. It stands up again, and is seized with tremors. 
and strikes its head against the wall. It soon falls, struggles desparately, for ten 
minutes, and finally succumbs. This occurs about twenty-four hours after the 
appearance of the first symptoms. j 
; *T only allude briefly to the symptoms and lesions, confining myself to indicating the main. 
eatures, : 
