I 



EXPLANATION OF THE PLATES, 



The monthly rain maps give in each case the average rainfall 

 for that month for ten years ending December 31st, 1887. 



The rainfall is given in inches and tenths. On some of the 

 maps the decimal point was not reproduced in the copper plate. 



Average monthly values which have been approximated by 

 means of monthly maps are indicjated in the tables by asterisks. 



