590 
ft. W. BtJBKft. 
ends of some germs flagella are noticed, which probably give 
them the slow, bending, twisting motion that is often seen in 
many cultures. The more mature forms vary in size from 4 m * 
to 5 m. in length, and 17 m. in width ; in the ovoid stage, the 
length is from 25 m. to 30 m., and width about 15 m. They 
are difficult to stain, but answer most readily to ‘ Johne s 
fuchsin.’ The cultivation has been tried in many different 
media, such as blood serum, beef broth, agar-agar, egg al¬ 
bumin, potatoes, and oyster bouilon, but artificial lymph with 
liver broth seems to be productive of the best results.”— {Vet. 
Journ ., June, 1891). 
Speaking of the intra-globular bodies met with in Texas 
fever of cattle, Dr. Theobald Smith* says,—“The smallest 
forms appear like deeply stained cocci, about \ to 1 p in diam. 
eter, situated within the unstained circle of the corpuscle. 
Occasionally the bodies are nearer 2 p in diameter, and then 
the staining may be less dense. Besides the spherical forms, 
ovoid forms are not uncommon. These usually occur in pairs 
within the same red corpuscle. A still rarer pear-shaped 
form is encountered in stained preparations of the blood. It 
is rounded at one pole, while the other is pointed and some¬ 
times drawn out as a short filament. These forms quite in¬ 
variably occurred in pairs, a corpuscle being occupied by a 
single pair. I believe the pair to be a result of division of the 
single body within the globule. In one instance I saw the ta_ 
pering ends of a pair apparently continuous. Each body was 
about 3 p long, its greatest width, 1-5 p. These are the lar¬ 
gest I have encountered.” This same form of organism has 
been noted by Frohner f in pernicious anaemia among horses 
in Germany, where two, and even three or four were wit¬ 
nessed in the same corpuscle. 
Of chief interest at present stands the subject of the pa¬ 
thology of surra. The discovery of the parasite might be 
thought to have advanced the question of its etiology suf¬ 
ficiently in itself without any further questions regarding 
* Veterinary Journal , March, 1890. 
j Archiv, f. Wm. u. Prakt. Thierheilk. , Bd. xii, 5 u. 6 Heft, 1886. 
