12 
ppleen had evidently decreased in size ; its con- 
sistence had become more firm, and its surface 
dark-red and smooth. In other experiments the 
surface of the spleen had become granulated, 
assumed a steel-coloured appearance, and the 
margin had become warty. Similar effects were 
otherwise in numerous experiments by Mosler 
only observed under the influence of electricity 
and the use of quinine. On auscultation the 
peculiar sound was heard which occurs in the 
chill stage of intermittent fever and typhus 
recurrens. 
In the sixth chapter Dr. Schulz treats the 
effect of eucalyptus oil on the heart, the circula- 
tion, and respiration. Schlaeger has shewn by 
numerous experiments what reducing effect on 
the action of the heart and on the circulation of 
the blood is effected through the oil of eucalypts. 
This applies not merely to man and mammals, as 
proved already by Gimbert and also by Siegen, 
but likewise on the lower vertebrata. Schlaeger 
noticed in experiments on frogs that after sub- 
cutaneous injection of eucalyptus oil the palpitation 
decreased in eight hours from 48 in a minute to 
6, and ceased soon subsequently ; the respiration 
was lessened correspondingly. Schulz in a similar 
experiment observed that the respiration came 
already to a standstill, while the heart was 
beating yet 28 in a minute ; nor did the respira- 
tion return. Both impairments would augment 
