Archibuteo lauonus sano t i - ,i ohann i s 
Springfield, Mass. 
1898. "Since the disappearance of the snow here, the work of 
Mar. 23. the field mice is found in unusual large amounts, indicating 
the presence of these animals last winter in numbers far be- 
yond the average, which undoubtedly accounts for so many 
Rough-legged Hawks being here". 
Letter from Robert 0. Morris. 
