992 



SCIENCE 



IN. S. Vol. XXXVII. No. 965 



Gray red (heterozygous) 2 



X 

 Ebony pink cJ 



(gray red 3 



gray pink 601 

 ebony red 584 

 ebony pink 4 



This gives a total of 158 cross-overs out of 

 2,914 flies, but the absolute proportion is not 

 very significant, because of the variability 

 mentioned above. That rather strong link- 

 age exists, however, there can be no doubt. 

 A. H. Sturtevant 

 Columbia University, 

 May, 1913 



THE NOBTH CABOLINA ACADEMY OF 

 SCIENCE 



The twelfth annual meeting of the North Caro- 

 lina Academy of Science was held in the Science 

 Building at the State Normal College, Greensboro, 

 on Friday and Saturday, April 25 and 26, 1913. 



Following a meeting of the executive committee 

 early on Friday afternoon, a session was held for 

 the reading of papers. At the night meeting, 

 after an address of welcome by President J. I. 

 Foust, of the college, President C. S. Brimley, of 

 the academy, delivered his presidential address on 

 " Zoo -geography. " Adjournment was then had to 

 the Students' Building, where the members of the 

 academy were given a reception by the faculty of 

 the college. 



On Saturday morning the academy met for its 

 annual business meeting. Reports were then made 

 by the secretary-treasurer and the several stated 

 committees. Twelve new members were elected. 

 The finances were shown to be in good shape — all 

 bills being paid, with $125 in the savings bank. 

 It was noted that Dr. C. W. Stiles, one of our 

 members, had by action of the executive com- 

 mittee been appointed to represent the academy 

 at the Ninth International Zoological Congress at 

 Monaco, March 25-29, 1913. 



The following officers were elected for the en- 

 suing year : 



President — Franklin Sherman, state entomolo- 

 gist, Raleigh. 



Vice-president — Z. P. Metcalf, professor of en- 

 tomology. North Carolina Agricultural and Me- 

 chanical College, West Raleigh. 



Secretary-treasurer — E. W. Gudger, professor of 

 biology, State Normal College, Greensboro. 



Additional Members of Executive Committee — 

 W. C. Coker, professor of botany, University of 



North Carolina, Chapel Hill; J. J. Wolfe, pro- 

 fessor of biology, Trinity College, Durham; C. S. 

 Brimley, naturalist, Raleigh. 



Following the business meeting, the reading of 

 papers was resumed and continued until the pro- 

 gram was finished and adjournment had at 1:15 

 P.M. The attendance was 27 out of a membership 

 of 76. There were 22 papers on the program. 

 Four of these were read by title, one was pre- 

 sented by another member in the absence of the 

 author, and the other 17 were read by their au- 

 thors in order as called for on the program. 



The papers read were as follows: 



Zoo-geograpJiy: C. S. Brimley, Raleigh. 



Briefly discusses the primary life areas of the 

 world, which the author believes to be five in 

 number, namely, an Australian, a Neotropical, an 

 Ethiopian, an Indian with the limits usually as- 

 signed to them by zoologists, and lastly a Northern 

 Realm, including all of the earth's land surface 

 lying north of the other four. The paper then 

 divides the Northern Realm into three regions, an 

 Arctic, a Eurasian and a North American, and 

 proceeds to divide the North American continent 

 into the usual seven life zones, Arctic, Hudsonian, 

 Canadian, Alleghanian, Upper Austral, Lower 

 Austral and Tropical. The life zones entering the 

 state of North Carolina are then discussed at 

 greater length and found to be four in number, 

 the Canadian, Alleghanian, Upper and Lower 

 Austral. The fijst is stated to occupy the summits 

 of the moimtains above about 4,500 feet, the 

 second that portion of the mountain region lying 

 between 2,500 and 4,500 feet elevation, the third 

 comprising the mountain valleys under 2,500 feet, 

 and the central part of the state lying between 

 the mountains and a line drawn from Weldon to 

 Raleigh, and thence to Charlotte, the fourth in- 

 cluding the remainder of the state, namely, all 

 lying south and east of the above-named line. 

 The animals distinctive of these zones are named 

 and certain irregularities and anomalies in dis- 

 tribution are pointed out. 



This paper will appear in full in the May issue 

 of the Journal of the Elislia Mitchell Scientific 

 Society. 



Will Cells of the Emiryo Sea Urchin, when Rein- 

 troduced into the Body of the Adult, become 

 Tissue Cells of the Latter? H. V. Wilson, Uni- 

 versity of North Carolina, Chapel Hill. 

 Plasmodia formed by union of lymph cells were 

 allowed to engulf blastulse, and were grafted on 

 the wound membranes which close in apertures 



