290 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



and just getting ready to pass onto the ocean. The progress of the 

 storm was shown to the audience as plainly as though it were being 

 watched in reality. 



May p, i8go. — Special Meeting. 



By special request Sergeant Walz delivered a lecture supplementary 

 to that of April 25, taking up the subject of "Weather Proverbs." 

 Mr. Walz believes that many of the old proverbs are the result of long 

 and shrewd observation of atmospheric phenomena, and he treated 

 the subject in an interesting and convincing manner. 



June ij, i8go. — Regular Meeting — adjourned from May 30. 



President McCowen in the chair; twelve members and several vis- 

 itors present. 



The following report of the work of the Academy in connection 

 with the public schools was submitted by Prof. Pratt, and referred to 

 the publication committee : 



Davenport Academy of Natural Sciences, | 

 June 13, 1890. j 



In order to make the history of the Academy lessons to classes from 

 the public schools thus far a matter of record, I desire to offer a brief 

 report of that work, which was concluded for this school year on the 

 2ist of last month, May, 1890. 



In accordance with a proposition from the Academy and its accept- 

 ance by the school board in February, 1889, as heretofore reported, 

 six courses of lessons have been given ; one lesson each on six dif- 

 ferent subjects to each of the following classes, viz. : the eighth and 

 ninth grades of all the city grammar schools and all grades of the high 

 school. The subjects, dates, and attendance were as follows, viz. : 



First Series. — On "Teeth." February 27 to March 26, 1889; 18 

 lessons ; aggregate attendance, 509 pupils, 20 teachers. 



Second Series. — "The Mound Builders and Their Works." April 

 10 to May 17, 1889; 16 lessons; attendance, 551 pupils, 18 teachers. 



Third Series. — "Primitive Rocks; the Story of a Few Pebbles." 

 May 20 to June 18, 1889; 14 lessons; attendance, 493 pupils, 16 

 teachers. 



Fourth Series. — "Coal Plants and Their Products." September 29 

 to October 25, 1889; 19 lessons; attendance, 660 pupils, 22 teachers. 



Lesson to Eighth Grade of School Year i88g-i8go only. — "The 

 Mound Builders and Their Works." February 3 to February 11, 

 1890; 7 lessons; attendance, 243 pupils, 9 teachers. 



Fifth Series. — " The Vertebral System in Man and Animals." Feb- 



