ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
85 
form is visible only immediately before or during the cold stage ; (4) all 
forms, except the half-moon shape, disappear after large doses of quinine ; 
(5) malaria can be induced by the intravenous injection of malarial blood. 
The foregoing statements are regarded as matters of fact, and the 
following, though hypothetical, quite probable: — That (1) between the 
appearances in the blood and the disease there exists an aetiological con- 
nection ; (2) these apjjearances are not present in the blood under other 
circumstances ; (3) the bodies described are to be considered as one and 
the same organism; and (4) no form except the flagellate is to bo 
regarded as an independent organism. 
New Pleomorphous Schizomycete, Bacillus allantoides.* — Dr. L. 
Klein describes a pleomorphous bacillus which he obtained originally 
4J years ago from an impure cultivation of B. megatherium. The name 
given to the species is derived from the sausage-like zoogloea. Starting 
from a rod-stage in the developmental cycle, the micro-organism is dis- 
tinguished as motionless rodlets about 0*5 /x thick and three or four 
times as long. The motionless rods grow up into filaments of 4-8 cells, 
surrounded by a gelatinous membrane. Slight but distinct movements 
are now visible, and in this mobile condition the individual elements are 
capable of immediate reproduction, forming short filaments. These 
secondary bacilli next degenerate into coccus-like elements, then rapidly 
multiply, and pass on to the sausage-like zoogloea-stage. Tlie next step 
in the development shows the bacilli being reproduced from the zoogloea 
mass. 
Movements of Micrococci. | — Professor Mendoza, after alluding to 
Dr. Ali-Cohen’s communication on the specific movements of Micrococci, :{; 
states that he was the first to describe a micrococcus endowed with 
motion. This micrococcus was found by the author when examining 
for Sarcina ventriculi. Cultivations on various media showed that the 
fungus was essentially a tetrad, forming on gelatin plates white cir- 
cular sharp-edged colonies. With increasing age the colonies became 
sugar-coloured, and gave off an odour resembling skatol. The fungus 
did not liquefy gelatin. In fluid media development was slow, and the 
cultivation dark to the bottom. 
Morphologically this coccus is almost always a tetrad, although this 
form is sometimes less obvious. It possesses a distinct capsule and 
sheath inclosing a finely granular protoplasm. 
The movements are best seen in fluid media, and consist in rapid 
forward rollings of the tetrads, which seem to turn in various directions. 
The name given by the author to this microbe is Micrococcus tetragonm 
mobilis ventriculi. 
Recent Bacteriology.— Dr. H. C. Ernst reports § on recent advances in 
Bacteriology. As he cites a number of medical journals, such as the 
‘ Prager Medicinische Wochenschrift,’ ‘ Le Bulletin Medical,’ and Russian 
medical journals, he gives information as to a number of discoveries 
which there has been no opportunity to note in this Journal. 
* Centralbl. f. Bakteriol. n. Parasitenk., vi. (1889) pp. 383-6 (16 figs.). 
t T. c., pp. .566-7. X Cf. this Journal, 1889, p. 79.5. 
§ ’Annual of the Universal Medical Sciences.’ Issue for 1889. Philadelphia, 
1889, vol. V. section 1, 24 pp. 
