8 Journal of the Mitchell Society [July 



separated from it by erosion, also by the fact that Ball Mountain, in 

 Davidson and Rowan counties, of similar rock and structure has been 

 cut by a river (Yadkin) which flows through it. That the upland level 

 of the region is a peneplain is also proved by the presence of smooth, 

 rounded quartz pebbles on this plain. 



The mountain consists chiefly of dark rhyolite which made its 

 way upward along the contact between the ancient crystalline schists 

 north of it and the granite on the south. On each if its slopes flow 

 structure has been observed in the weathered rock and in many places 

 where it is fresh. 



It is called Mount Collier in honor of Professor Collier Cobb who, 

 in 1892, was the first to recognize its igneous origin. (Specimens and 

 structure sections were used in presenting the paper.) 



SOME OBSERVATIONS ON THE RED CEDAR 



H. R. TOTTEN 



Junipcrns virgiiiiana is our common cedar and is the only species of 

 Junipcrus that is at all abundant in North Carolina. Junipcrns com- 

 munis, the northern cedar, is known to occur in a few localities in the 

 mountains. The male and female flowers of Junipcrus virginiana are 

 borne on separate trees. The time of flowering is dependent upon the 

 climate and weather. The male trees begin blooming first and the return 

 of cold weather may delay the female trees. In both the seasons 1914 

 and 1915 the male trees began blooming nearly six weeks before the fe- 

 male trees. The young "berry" is formed soon after pollination by the 

 growth and fusion of the sporophylls about the ovule. Fertilization takes 

 place about the middle of June. The seeds are matured in the first seas- 

 on. The species is very variable in color and habit of growth, varying in 

 the neighborhood of Chapel Hill and Durham, in color from a glaucous 

 to a deep green, and in form from an open spreading tree to a close 

 spreading tree and to a narrow columnar tree. 



SIGNIFICANCE OF GOSSYPOL IN THE COTTON PLANT 



F. E. CARRUTH 



Gossypol, CisHiiOi (or possibly CanH.nOio) according to Marchlew- 

 ski* appears to be a diliydric (ortho) phenol. 



It occurs in peculiar glands, "resin glands," in all parts of the 

 cotton plant. Its physiological significance is not clear. The change 

 in color of the cotton flower on ageing is probably due to it. 



It is a yellow substance, dissolving in H3SO4 with a red color and 

 oxidizing easily in alkaline solution with a deep blue color. It is 

 being studied in an endeavor to show that it is a respiration pigment 



•J. Prakt. Chem. 1899, 60, p. 80. 



