a 
458 Scientific News. [ April, 
course remove or weaken the color; but decoloration is gradual, 
so that one needs only to watch and apply the clove oil when the 
color has been reduced to the desired intensity. This process 
then, as has already been explained in the October number of this 
journal, p. 779, consists in over-staining and then removing the 
color to any desired degree. The process of decoloration is not 
entirely arrested by the application of clove oil, contrary to Blanc's 
assertion, hence it should be replaced by Canada balsam as early 
as possible. The same method is adapted to other microscopic 
animals. j 
:0: 
SCIENTIFIC NEWS. 
— That measles is a disease of parasitic nature, has been held 
‘by Herr Tschamer, who found a small organism in the urine of 
persons having scarlatina, and the same in cases of measles and 
diphtheria. M. Le Bel, however, has lately found a vibrion peculiar 
to measles; it isa short, slightly curved rod, highly refringent, and 
very slow in movement. Its spores are held in a pouch of dead 
protoplasm, which gradually disappears. Usually these vibrions 
appear in the urine and during a few days at first; they dissap- 
pear when the fever comes. In one case another occurrence of 
spores was observed on the thirty-fifth day in an adult, an the 
vibrion persisted. To have an idea of the intensity of the disease, 
it is well to examine the urine immediately after emission. Again, 
vibrions were found in the skin at the time of desquamation 
(scaling). M. Le Bel cultivated the organism in a mixture © 
urine and bouillon, and injected some of the liquid into a rain! 
pig. The animal was not inconvenienced ; but on the tenth day 
thin vibrions were noticed in its urine; they disappeared on s 
zelfth. 
nd bury? 
— Mr. Fr. Heger extended his researches to new-found ud- 
ing-grounds near Hallein (Salsburg), a part of a grou 
