cclxv 



eastern Missouri," which was referred to the Publication Com- 

 mittee. 



W. B. Potter exhibited specimens of copper implements from 

 Wisconsin, and iron ore celts from Missouri. 



Caleb Croswell, Chas. A. Pearce, Geo. O. Carpenter, and Geo. 

 Class, were elected to associate membership. 



Octobe?' i, 1877. 



Dr. G. Engelmann in the chair. 



Nine members present. 



Dr. G. Engelmann made the following report on 



THE TEMPERATURE OF THE SUMMER. 



The last week was hot, and so were a few days in the middle of the 

 month. But we have had much warmer Septembers; and the average for 

 this month, 68.8 degs., did not even come up to the average for Sep- 

 tember in 42 years, which I have found to be 69.1 degs.; the warmest 

 September I have observed was that of 1S65, with 75.5 degs., the warmest 

 day of that month indicating 93.5 degs. But in other years the tempera- 

 ture rose still higher yet; in 1872 to 96 degs., and in 1864 to 102 degs. 

 The coolest September I have observed was that of 1865, with only 63.2 

 degs. mean temperature. 



In October the temperature has several times risen to over 90 degs., 

 and as late as 1S72 it reached 89 degs., on October 3rd. 



And now about the summer temperature, our impression is that it wa^ 

 a delightful cool summer. And so it was also according to thermometrical 

 observation. The following little table shows that every month was a lit- 

 tle below the average, not so much as to make it a cold or uncomfortable 

 summer, and it gives also the warmest and the coolest summer months 

 and summers in 42 years : 



1S77. AV.42Y1-S. Highest Date. Lowest Date. 



June 74-i 74-7 7S-S 1S76 70.3 ] j||9 



J"lv 73.7 79-2 83.5 } ** 73-7 1S4S 



August 75.1 76.7 81.4 1851 72.7 1875 



Summer 76.0 76.9 So.i 1854 73.7 1848 



Mr. Croswell exhibited an engraved tablet, and three vessels, 

 the decorations of which were quite unique. They will be figured 

 in the Atlas of Missouri Archaeology, now in preparation by the 

 Archaeological Section. 



