562 TWENTY-THIRD ANNUAL YEAR BOOK— PART VIII 



days earlier than last year and the earliest ever mailed. Adequate 

 funds would hasten publication at least 30 days and bring added im- 

 provement from close contact with more of the assessors. 



Publications were distributed as follows : Monthly Climatologi- 

 cal Data, about 17,000 copies; Weekly Weather-Crop Bulletins, 

 about 20,000; Daily Weather Forecast Cards, to 1,593 addresses. Of 

 the bulletin, "Iowa Monthly Crop Report," about 5,100 copies were 

 distributed each month. Five hundred copies of the Monthly Cli- 

 matological Data are distributed each month through the United 

 States Department of Agriculture, Weather Bureau, to scientific 

 institutions and libraries in this and foreign counties. In co- 

 operation with the U. S. Bureau of Agricultural Economics, about 

 4,800 mimeographed copies of special monthly crop bulletins were 

 issued to the press. 



Daily weather forecasts were distributed by telegraph at the ex- 

 pense of the U. S. Weather Bureau to 64 towns. From these towns 

 the forecasts are made available by free telephone to 38,263 rural 

 subscribers, and 145,801 town subscribers. Much attention was 

 given to accuracy and promptness in the transmission of forecasts by 

 telegraph and telephone. 



Frost warnings are sent when necessary during the fruit bloom- 

 ing season to all orchardists in the State prepared to use orchard 

 heaters and who make application in advance for the service. 



Radio telephone distribution of daily weather forecasts was begun 

 by the Electrical Engineering Department, Iowa State College, Ames, 

 Iowa early in June, 1922. Forecasts based on observations taken 

 throughout the United States at 7:00 a. m. (Central Standard Time) 

 are broadcast from Ames ( WOI) at 9 :30 a. m. and 12 :40 p. m. Fore- 

 casts based on similar observations at 7 :00 p. m. are broadcast at 

 9:30 p. m. 



Forecasts are also broadcast from WOC (Davenport) at 11:00 

 a. m. ; 12 :30 p. m. ; and 9 :40 p. m. 



WEAB (Fort Dodge) at 10:00 a. m. 



WKAA (Cedar Rapids) 12:15 p. m. and 9:45 p. m. 



WEAU (Sioux City) 10:15 a. m. 



Special warnings are sent from various stations between 4 :00 

 p. m. and 5 :00 p. m. All broadcasting is done at 485 meters wave 

 length. Most any of the above stations can be heard anywhere in 

 the State by the use of audion bulb receivers ; and at a radius of 50 

 to 75 miles from the sending stations by the use of crystal receivers. 



Increased transportation by automobile and motor truck has 



