Ivi 



Mr. Nipher read a paper detailing the results of his examina- 

 tion of the Marshfield tornado of April iSth, which was followed 

 by a paper by C. Shaler Smith upon the same subject, these gen- 

 tlemen having examined different parts of the path. 



Dr. O. Pavy, who was present, was invited to address the 

 Academy, and made a few remarks in regard to the Howgate 

 expedition, which he is to accompany as surgeon and naturalist. 



May 17, 1880. 



Hon. A. Todd, Vice President, in the chair. Eight members 

 present. 



Dr. O. Pavy was elected to corresponding membership. 



June 7, 1880. 



The President in the chair. Seven members present. 

 Dr. Engelmann made the following remarks concerning the 

 month of May : 



The present May with its mean temperature of 7i°.3 was, with one ex- 

 ception, the warmest May observed here, and was also remarkable as 

 exhibiting no great extremes of temperature. The extremes were 4i°.5 

 and 89°. 5. The temperature of the three warmest Mays was — 1860, 72°.! ; 

 1870. 70°. 2 ; 1S80, 7i°.3. Al! others lie between 60° and 70°. 



Dr. Hambach exhibited a new species of Melonite and spines 

 of Melonites crassus^ and announced a paper in description of 

 these fossils. . 



October 4, 1880. 



Dr. I. Forbes in the chair. Eight members present. 



The Corresponding Secretary presented a paper by Dr. Seyf- 

 farth on the " Hieroglyphic Tablet of Pompeium," which was 

 referred to the Publication Committee. 



Mr. Nipher read a paper giving results of the magnetic survey 

 of Missouri during the summer of 1880. 



