358 SUMMARY OF CURRENT RESEARCHES RELATING TO 
Protozoon- and Coccidium-like Micro-organisms in Cancer-cells.* — 
Dr. Scliiitz considers tliat the amoeboid forms, observed by van Henkelom 
and Sjobring in cancer-cells, which were supposed by those observers 
to be the cause of the epithelioid proliferation of the carcinoma tissue, 
are probably red blood- corpuscles, since they react in a similar manner 
to Flemming’s staining method. Besides this, both Klebs and the author 
have noticed migrations of corpuscles from vessels into these cells, after 
which they undergo various changes of form. 
The appearances described as sporocysts, the author thinks, are 
leucocytes which have undergone some peculiar change, and he holds 
that his opinion is confirmed by the absence of any observation of these 
appearances in fresh preparations of cancer tissue. 
Myoparasites of Amphibia and Reptilia.t— From a further exami- 
nation of his specimens with improved lenses, Prof. B. Danilewski now 
states that the myoparasites of Amphibia and Beptilia are Microsporidia ; 
the muscle-fibres are distended with extremely small spores, which are 
extremely like Cornalia corpuscles, or Pebrine spores. The best 
examples of this disease are seen in the muscles of the pc sterior extre- 
mities of the frog, where they are commonly visible as whitish spindle- 
shaped streaks about 1-1 ■ 5 mm. long. 
The parasitic bodies lie within the sarcolemma and consist of small 
(0 • 003-0 • 004 mm.) oval or ovate spores which consist of a sheath and 
protoplasmic contents. In the riper spores the central portion is more 
transparent than in the young, the sheath of which does not present a 
double contour. 
The author proceeds to speculate whether there be any connection 
between Myosporidia and Haematozoa sporozoica. 
* Munch. Med. Wochenschr., 1890, No. 35. See Centralbl. f. Bakteriol. u. Para- 
sitenk., ix. (1891) pp. 285-6. 
T Centralbl. f. Bakteriol. u. Parasitenk., ix. (1891) pp. 9-10. 
