ZOOLOGY. 365 
became about as scarce as it had been numerous before. All 
accounts agree as to the sudden diminution of its numbers in the 
month of June, and so far as Missouri is concerned, it did not 
increase to any alarming extent during the rest of the year. The 
disappearance was, in many sections, so thorough that it is very 
questionable whether man and natural enemies should alone be 
credited with the cause. The spring was uncommonly dry and 
‘ rth to undergo their transforma- 
tions, a great many of them will undoubtedly die if the earth con- 
knocked from the vines on to the dry and heated ground, especially 
if the vines have been well hilled ; and it is doubtless because the 
msect cannot thrive when the thermometer ranges near 100° 
d 
C te of things occurred in 1868, and Dr. Henry Shimer, of Mt. 
arrol], TIl., then attributed such disappearance to the dryness of 
son.* We are justifiable, therefore, in concluding that 
be very pleasant and agreeable to 
Stvarxe Marrtanp Marmor.— For the last forty years the 
fact of the common Maryland Marmot, or Woodchuck, being able 
to sing like a canary bird, but in a softer, sweeter note, has been 
Mite familiar to myself, and others who could be brought forward 
e Witnesses. Mr. Lockwood seems to have an ear to hear, which 
R Cut for the thousandth time our statement. Mr. Audubon 
S ae only zoological naturalist who would lend a respectful 
` * Am. Nat. vol. iii, pp. 91-99. 
