lix 



while in 1849 the mean rose to 5i°.8. The average November tempera- 

 ture is 42 9. 



The coldest November temperature observed by Engelmann at any time 

 was minus o°.5 in 1845, although the mean of that month fell only o.°2 

 below the normal (42°. 9). During last month, in S.W. Missouri, the 

 temperature and the mean temperature have been lower than were ever 

 observed at St. Louis. The coldest temperature in the State is reported 

 from Neosho, namely, —16° on the i8th (and —4° and —6° on the 17th 

 and 19th), while the average for the month at that station is 30°.9. Only 

 one other station reports a lower mean, viz. Oregon, 28.8; but the coldest 

 lemperaiure observed at Oregon was +5°- This extreme cold extended 

 to other points in South Missouri (on the iSth), the temperature in the 

 north part of the State averaging 15 degs. higher; thus, on the 18th the 

 minimum at 7 a.m. readings were — 



North. 

 Corning, -|- 6 



Oregon, -f-5 



Keokuk, above -|-3 



Central. 



Chamois, — 8 



Warrensburg, — 6 



Boonville, —2 



The rainfall at St. Louis was 3.24 (normal 2.95), the greater part here, 

 as in the State, falling before the 15th. In S.E. Missouri the fall has ex- 

 ceeded 5 inches. In the rest of the State, excepting along the Missouri 

 valley from Kansas City to near Glasgow (where the fall was over 2 in.), 

 the fall has been between i and 2 inches. 



Dr. Engelmann made a few remarks on graphical methods of 

 representing the characteristic features of a temperature series. 



December 20, 1880. 



Dr. Engehnann in the chair. Sixteen members present. 



Dr. Engelmann gave a brief account of his work during last 

 summer among the forests of Oregon, Arizona, and California as 

 far south as the Mexican boundary. This work has been done 

 for the U. S. census, and was done in company with Dr. Parry 

 and Prof. Sargent. The forests of California are very fine, and 

 composed mostly of coniferous wood. Timber for wagons and 

 wine barrels is imported from the east, and some timber is 

 obtained from Mexico. The red-wood, which grows to a great 

 size, is much used, and will soon be exhausted. 



Dr. L. P. Pollman was elected associate member, and Dr. J. 

 L. R. Wadsworth, of Coliinsville, Ills., was elected to correspond- 

 ing membership. 



