EIGHTEENTH ANNUAL YEAR BOOK— PART IX 



475 



the sun a yellowish cast at midday with red sunrise and sunset. At 

 Washta it was described as resembling "Indian Summer" conditions; 

 Meteors, 26th, 31st. See full account of the unusual meteor of the 31st 

 on page 19; Sleet, 3d, 4th, 28th; Thunderstorms, 2d, 3d, 8th, 9th, 10th, 

 17th, 18th, 19th, 20th, 21st, 22d, 25th, 26th, 28th, 29th, 30th, 31st; Birds 

 first observed, Grinnell, brown wrens, 9th; grossbeaks, 14th; red headed 

 woodpeckers 15th. 



Rivers. — Moderate stages prevailed in all of the rivers, and all fell 

 slowly and steadily, except the Missouri, down which a slight crest 

 passed toward the close of the month. 



OO0VIPAlRA.Ti:VE DATA TOR THE STATE-^MAT. 



T indicates an amount too email t> measure, or less than .005 Inch of pre- 

 cipitation, and less tlian .05 Inch of snoirfaU. 



METEOR OF MAY 31, 1917. 



Shortly before 10 p. m.. May 31, a meteor of greater brilliance 

 than any other that has occurred in this section of the country 

 for many years was observed in the northwest one-third of Iowa 

 and territory in adjacent states. It appeared like a giant sky rocket, 

 accompanied by a glare of light equalling the brightest lightning flash, 

 and explosions of sufficient violence to rattle windows and shake houses 

 in Woodbury and Plymouth Counties in Iowa, and adjoining counties 



