938 THE AMERICAN NATURALIST. 
I have little doubt that the errors would be even less if my 
methods of observation had been more accurate, z.e., chiefly if 
the thermometer had been in the immediate neighborhood of 
the performer instead of being on the other side of the house 
from the vine, whence many of the notes were taken. 
It would be very interesting to see whether our “snowy tree 
cricket.” could be induced to give a chamber concert like his 
black cousin on the hearth, and to try whether an artificial 
change of temperature would change the rapidity of the music. 
To physicians and nurses some interesting comparisons with 
the rhythm of the pulse as affected by temperature in febrile 
diseases will be suggested. 
