1913] Proceedings of IST. C. Academy of SciEisrcE 7 



Ragsdale, Virginia, Associate Professor of Mathematics, State Normal 

 College, Greensboro. 



Rankin, W. S., Secretary State Board Health, Raleigh. 



Robinson, Mary, Assistant in Biology State Normal College, Greensboro. 



Rosenkrans, D. B., Instructor Botany, A. and M. College, W. Raleigh. 



Shaw, S. B., Department Agriculture, Raleigh. 



Sherman, Franklin Jr., State Entomologist, Department Agriculture, 

 Raleigh. 



Shore, C. A., Director State Laboratory Hj'giene, Raleigh. 



Smith, J. E., Instructor in Geology, University N. C, Chapel Hill. 



Stiles, C. W., Director Marine Hospital, Wilmington. 

 ♦Strong, Cora, Associate Professor of Mathematics, State Normal Col- 

 lege, Greensboro. 

 *Swarthout, G. E., Professor Nat. Science, Atlantic Christian College, 

 Wilson. 



Tillman, Opal I., Scientific Assistant Department Agriculture, Raleigh. 



Venable, F. P., President University of N. C, Chapel Hill. 

 *Wheeler, A. S., Associate Professor Organic Chemistry, University N. 

 C, Chapel Hill. 



Williams, L. F., Associate Professor Chemistry, A. & M. College, W. 

 Raleigh. 



*Wilson, H. v.. Professor Zoology, University of North Carolina, Chapel 



Hill. 

 Wilson, R. N., Professor Chemistry, Trinity College, Durham. 

 ♦Winters, R. Y., Plant Breeder, N. C. Agr. Experiment Station, W. 



Raleigh. 

 ♦Withers, W. A., Professor of Chemistry, A. & M. College, W. Raleigh. 

 ♦Wolfe, J. J., Professor of Biology and Geology, Trinity College, Durham. 



In addition to the presidential address on "Zoo-geographj," 

 which is published in the current number of this Jouenal^ the 

 following papers were presented: 



WILL CELLS OF THE EMBRYO SEA URCHIN, WHEN REINTRO- 

 DUCED INTO THE BODY OF THE ADULT, BECOME 

 TISSUE CELLS OF THE LATTER 



H. V. WILSON 



Plasmodia formed by union of lymph cells were allowed to engulf 

 blastulse, and were grafted on the wound membranes which close in 

 apertures made in the test of the urchin. The blastulae after certain 

 changes broke up into their constituent cells. In this way disssociated 

 embryonic cells were brought into the midst of a developing membrane, 

 having a very simple histological character. In the actual experiments a 

 very large proportion of the embryonic cells underwent degeneration. 

 There was some evidence, though by no means convincing, that groups 

 of the smaller cells became part of the developing membrane. 



