238 TRANS. OP THE ACAD. OF SCIENCE. 



Mr. Broadhead exhibited several flint implements, found at 

 Frederick, 111. He observed that, some years ago, more than 

 a hundred, ol similar shape and size, were found beneath the 

 surface of the ground, in Warren Co.. arranged in a circle 

 and set on edge with the plane surfaces in contact. 



Frank W. White, M.D , of St. Louis, was elected an Asso- 

 ciate Member. 



January 4, 1864. 

 Vice-President Wislizenus in the chair. 



Eleven members present. 



A letter was read from the Societa Italiana di Scienze 

 Naturali, Milan, Dec. 3, 1S63, acknowledging receipt of the 

 Trans, of the Academy. 



The Corresponding Secretary laid upon the table the Ca- 

 nadian Naturalist & Geologist, Vol. VIII., No. 5, Oct., 1863, 

 Montreal, from the Society of Natural History. 



Dr. C. W. Stevens exhibited, from a medical student, a 

 preparation of an extra-uterine fcetal pig. 



Dr. Engelmann reported the results of his meteorological 

 observations at St. Louis for the year 1863, and presented 

 diagrams constructed from the observations of T. J. Homer, 

 Esq., City Engineer, showing the rise and fall of the Missis- 

 sippi River during the year 1863, and the average stage of the 

 river for the last three years. He was requested to furnish 

 copies for publication in the Transactions. 



Dr. Engelmann remarked that the temperature of New 

 Year's morning was lower than he had before observed in 

 St. Louis. On that day the minimum thermometer indicated 

 22£° below zero. At the Missouri Botanic Garden, five miles 

 from St. Louis, the thermometer indicated (according to Mr. 

 Fendler) 23° below zero. 



Dr. Wislizenus reported the results of his observations on 

 Atmospheric Electricity at St. Louis during the year 1863, 

 with diagrams illustrating the same. He was requested to 

 prepare an abstract of his observations for publication in the 

 Transactions. 



An amendment to Article III. of the Constitution was 

 adopted as follows : 



§ 12. The class of Associate Members 'shall consist of two sections. 

 The first section shall be composed of Associate Members, as hereinbe- 

 fore provided : the second section, to be styled Associate Lite Members, 

 shall be composed, firstly, of Associate Members who shall at any time 

 pay into the Treasury the sum of fifty dollars, in commutation for all 

 future regular dues, and, secondly, of persons hereafter to be elected as 

 such who shall, within one month after the date of their election, pay into 



