106 Journal of the Mitchell Society [February 



Whereas, European Forestry has depended upon and reaped much benefit from 

 the Forest Experiment Stations of the various countries; and 



Whereas, several such experiment stations have been estabUshed in the western 

 part of the United States and none in the eastern states; and 



Whereas, we reaUze the importance of securing more accurate knowledge con- 

 cerning methods of management for the perpetuation of the valuable forests of 

 the Southern Appalachian region; therefore be it 



Resolved, that we go on record as strongly favoring the establishment of a For- 

 est Experiment Station by the United States in the vicinity of Asheville and do 

 hereby respectfully urge Congress to pass the bill providing for such station. 



C. S. Goodwin and C. R. Monroe were elected to associate member- 

 ship in the society. 



J. M. Bell — Further Studies on the Nitrotoluenes. 



This paper was the result of a continuation of work begun at the 

 request of the National Research Council on the freezing points and 

 thermal properties of the nitrotoluenes. The particular nitro- 

 toluenes investigated are those formed in largest amounts during the 

 nitration of toluene to TNT: viz., orthonitrotoluene (ONT) ; para- 

 nitrotoluene (MNT); 1, 2, 4-nitrotoluene (DNT); and 1, 2, 4, 6- 

 trinitrotoluene (TNT). There are two melting points for ONT, 

 corresponding to the two crystal forms of this compound ; the stable 

 form (m. p.-4.5°) and the metastable form (m.p.-10.5°). The follow- 

 ing systems were investigated: ONT-DNT and ONT-MNT-DNT 

 (with E. B. Cordon); ONT-MNT and ONT-MNT-TNT (with F. 

 H. Spry); ONT-TNT and ONT-DNT-TNT (with Woodford White). 

 A formal presentation of the results is to be made in early issues of 

 the Journal of Industrial and Engineering Chemistry. 



A. H. Patterson — Recent Work on Spiral Nebidae. 



A review of the recent work done at Mt. Wilson and elsewhere 

 on the Nebulae, Wolf-Rayet Stars and Stars of Classes B and A; the 

 theory of the origin of Spiral Nebulae was outlined, and lantern 

 slides shown of various types of spiral and quiescent nebulae; the 

 relation between velocity and temperature of the stars and nebulae 

 was touched upon, and the significance of the Spiral Nebulae some- 

 times occurring in pairs was pointed out. 



245th Meeting — December 14, 1920 

 J, W. Lasley, Jr. — Some Developments in Modern Geometry. 



Einstein's results resolve the problem of understanding the laws 

 of the universe into the problem of understanding geometry. It was 



