PART X 



Annual Report of the Iowa Weather and Crop Service 

 Bureau for 1918. 



CHARLES D. REED, Director. 



For convenient reference and comparison with past and future 

 years, this report contains the summaries of the monthly and 

 weekly bulletins of the Iowa Weather and Crop Service in cooper- 

 ation with the Weather Bureau of the United States Department 

 of Agriculture for the year 1918. 



The regular meterological, climatological and crop statistical 

 work of the Service was maintained at as high a standard of 

 efficiency as possible with the frequent changes in personnel, due 

 to war causes and the lack of trained assistance. The changes 

 in personnel were numerous among the cooperative observers 

 and crop correspondents. Resignations and deaths resulted in 

 closing a few stations. 



Increased cost of publication caused considerable curtailment 

 of mailing lists to keep within the appropriation, which has re- 

 mained the same for more than 20 years. Sixteen thousand copies 

 of the monthly Climatological Reports, and 22,500 copies of the 

 Weather-Crop Bulletins were distributed during the year. Five 

 hundred copies of the monthly reports are distributed each month 

 through the Weather Bureau, U. S. Department of Agriculture, 

 to scientific Institutions and libraries in this and foreign countries. 



The daily weather forecasts were distributed by telegraph at 

 the expense of the U. S. Weather Bureau to 78 towns, by franked 

 mail to 1,918 addresses, by rural delivery to 819 addresses, and by 

 free telephone to 131,272 subscribers. Frost warnings are sent, 

 in case of necessity, during the fruit blooming season, to all 

 orchardists in the State who are prepared to use orchard heaters 

 in case of frost or injurious temperatures. 



CLIMATOLOGY OF THE^YEAR 1918. 



The mean temperature, 49.2°, is 1.8° above normal. All months 

 were warmer than normal, except January, April, July and Sep- 

 tember which were deficient in temperature. The highest temper- 



