13 



Riley, Twenty-fifth Report, Secretary Mass. Board of Agriculture, 1877, 



243, 1878. 

 Riley, Report U. S. Dept. of Agriculture for 1881 and 1882, 89, 1882. 

 Round, Thirtieth Report, Secretary Mass. Board of Agriculture, 1882, 



337, 1883. 

 Webster, History of Epidemic and Pestilential Diseases, I., 259, 1799. 



