never both of these sex elements. As A FUNCTIONAL Y-CHROMOSOME? a result of this segregation, the That the Y-chromosome probably spermatozoa, when they are finally carries a gene for the black spot on formed, will carry either a "Y" or the dorsal fin of the little fish Libestis male-determining element, or an X reticulatus is demonstrated by Winge or female-determining element, but it of the Genetic Laboratory of the Royal is impossible for such a spermatozoön Veterinary and Agricultural College, to carry both. If a spermatozoön car- Copenhagen, in Journal of Genetics rying a Y-chromosome fertilizes an for October. This male spot passes egg, the sex will be male. Conversely. through the generations confined to if a spermatozoön carrying an X- the male sex-thus it is a sex-limited chromosome fertilizes an egg the sex character. It is not quite clear, howwill be female. ever, that the inheritance of the black The discrepancies found in earlier spot is different from that of the studies on the questions of chromo- beard in man; and the factor for this some numbers and sex determination quality can reside in the female gamwere probably due, as we now view etes. the matter, in part to an inadequate technique, but mainly to the use of tissue, such as that obtained from executed criminals, where the testes have remained in the body for half an hour after the death of. the indi vidual. During this delay the sensitive germ cells, apparently, undergo a certain amount of necrosis which results in more or less fusion of the chromosomes. When perfectly fresh material is used, together with an adequate technique, a complete study of the chromosomes can be made. THE EVOLUTION OF MAN. There is a great popular interest just now in the origin and probable fate of the human species. Very timely, accordingly, is a collection of essays on human evolution by students of its different phases. Professor R. S. Lull contributes a brief, but upto-date summary of our knowledge of prehistoric man. Dr. H. B. Ferris describes human embryological development and variation. Professor G. H. Parker writes briefly of the nervous On the basis of this study, we may system and its history. President answer now, without hesitation, the J. R. Angell discusses some problems two questions stated at the beginning in the evolution of intelligence. Dr. of this note. The number of chromoA. G. Keller considers " Societal Evosomes in man is 48 (diploid or somatic lution" and the origin of the "mores." number) and sex is determined in Professor Conklin treats of the man, at the moment of fertilization, Trend of Evolution" and the conjust as it is in insects, it being simply sequences of reduced fecundity of the a matter of which type of spermato-better-endowed classes and the prozoön fertilizes the egg. Since the Xcarrying and Y-carrying spermatozoa are equally as numerous, there is in man a 50-50 chance in favor of either sex. There is no way known in which this ratio can be modified. 66 tection of the race from the action of selective elimination. These are all interesting essays, by thorough scholars and, as such, deserve to be widely read. The Evolution of Man. A series of delivered before the Yale Chapter of the Sigma Xi. New Haven: Yale Univ. Press. 1922. 202 pp. $3.00. The completer account of this work lectures is now in press. EUGENICAL NEWS INDEX VOLUME VII., 1922 Babbott, Frank L., 90, 91. Baehr, Dr. Edmund M., 91. Bagg, Mrs. Halsey J. (See Osborn, Dorothy, '16), 119. Baldwin, 86. Baldwin, Dr. Bird T., 91. Barber, Col. E. C., 115. Barker, Lewellys F., 60, 77, 91. Barlow, Deborah, 12. Barrett, Mrs. Janie, 96. Barris, Elizabeth L., '13, 12. Bauer, E., 97. Baur, Dr. Erwin, 121. Bayet, Dr., 120. Beekley, Catherine W., '13, 12. Bell, Alexander Graham, 64, 93. Benjamin, Dr. Harry, 60, 70. Berman, Dr. L., 1. Berry, William, D., 96. Berryer, M., 120. Berthollet, Dr., 117. 62. Berzelius, 67. Bethel, Ellsworth, Billings, Dr. W. C., 114. Boas, Dr. Franz, 100, 133. Boulenger, Dr. M. F., 120. Bragg, William, 11. Buchanan, J. A., 67. Bucknell, Lydia E., '22, 112. Burnham, Dr. A. C., 56, 69. Burroughs, Nannie H., 96. Caldwell, Dorothy W., 18, 61. Campbell, Mary (Dranga), '10, 12. Cannizzaro, 67. Cannon, Gertrude E., '10, 12. Cestre, Prof. Charles, 47. Clark, Rosamond, 81. Clark, Willis, 12, 127. Cockerell, Dr. T. D. A., 62. Coley, Dr. William, 115. Conklin, E. G., 119. Cook, Dr. W. P., 71. Corry, Miss E., 2. Cosentini, Prof. Francesco, 114. Cotter, J. S., 100. Covert, Mildred S., '17 (see Hollister, Mrs. Scoville E.), 119. Cowan, Samuel K., 103. Cowdery, Karl M., 15, 127. Crane, Dr. Harry W., '15, 13, 52. Crum, 86. Cutler, Dr. Ira A., 62. Czolgosz, 97. Dahlberg, Mrs. G., 121. Dalton, 67. Danforth, Dr. C. H., 112. Darwin, Major Leonard, 2, 14, 117, 123. Davy, 67. Dawes, Dr. Spencer L., 60, 86. Dealey, William L., '13, 13, 119. Decroly, Prof., 14. Dederer, Dr. Pauline H., '22, 112. Delfino, Dr. V., 14, 41. Demoor, Prof.. 120. Dempsey, Jack, 124. Derby, Mary Jane, 43. Detlefsen, Dr. J. A., 119. Devitt, Saidee, '10, 104. Diakonoff, Michal, 13. Dight, Dr. Charles F., 63, 91. Dom, M., 120. Downey, Dr. June E., 11. Drachovsky, Dr., 61. Draper, Dr. J. W., 131. Dublin, Dr. Louis I., 8. Dunlap, K., 59. Earle, Mabel L., 4, 12, 44, 52, 84. Edel, Dr. W., 122. Edwards, Ancestors of Maj. Gen. Clarence Edwards, Hon. Bulkeley & His Desc., 104. Edwards, Desc. of John, 104. Edwards, Dwellyn Nathaniel, 104. Edwards Family, Jonathan, 104. 139 Ernst, Alfred, 124. Hodge, Dr. F. A., '13, 12. Hollingsworth, H. L., 50. Hollister, Mrs. Scoville E. (see Covert, Holmes, Dr. S. J., 95. Hostelet, M., 120. House, J. T.. 9. Howe, Dr. Lucien, 45. Estabrook, Dr. A. H., '10, 43, 46, 70, 108, Hultkrantz, J. V., 121. Gorringe, Capt. H. H., 102. Hunt, Prof. H. R., 60, 83, 90. Hunt, J. L., 107. Hunt, William C.. 51. Hurtado, Dr. Eduardo, 115. Govaerts, Dr. Albert, 14, 64, 92, 117, 120. Landsteiner, W., 67. Grieveson, E. R., 124. Griffith, Dr. C. R., 5. Groszmann, Dr. M. P. E., 119. Hagan, Prof. Harold R., 91. Harriman, Edward H.. 103. Harris, Reginald G., 17, 70, 91. Hart, Adelaide M.. '15, 12. Haskovec. Prof. Lad.. 4, 61, 121. Lattin, Jay D. B., '14, 12. Laughlin, H. H., 14, 60, 88, 91. Lee, Ola Bella, '22, 112. Levi, Prof. Ettore, 62. Lincoln, E. M., 107. Little. Dr. Chas. S., 115. Loucks, Marguerite. '22, 112. Lundborg, Dr. H., 46, 113, 121. Luque, Fernando, 25, 26. Lynch, Ruth (Stocking), '12, 52. MacBride, Prof. E. W., 2. 14, 100, 123. March, M. L., 14, 117. Markham, Sir C., 26. Markham, Dr. C. L., 114. Martyn, Charles, 68. Rageot, G., 10. McCullough, Dr. J. W. S., 14. Massart, Prof., 14. McFrederick, Nellie G., 12. Middleton, Dr. A. R., 2, 91. Miller, Joseph H., 22, 91, 112. Mjøen, Dr. J. A., 14, 113, 117. Moss, W. L., 67. Muncey, Dr. E. B., '11, 52. Nelles, Fred C., 53, 127. Newkirk, Mrs. W. M., '12, 100. Nichols, George, 2. Nichols, Martha, 2. Nilsson-Ehle. Dr. H., 121. i Noterman, Col., 120. Nutt, Dr. J. J., 115. Nutting, Dr. C. C., 92. Ohlsén, E. A., 121. Olson, Harry, 60, 82, 91, 125, 135. Rainey, Dr. Frank I.., '22, 112. Ramos, Dr. Domingo S., 100, 113. Ramsperger, H. G., 91. Ratner, Dr. Bret, 86. Reeves, Helen T., '10, 52. Reichert, Frederick L., '16, 65, 124. Richards, Clara (Pond), '14, 61. Richeson, Clarence V. T., 97. Riley, Margaret R., 104. Robinson, Dr. Daisy M., 117. Roman, Charles, 96. Rosanoff, Dr. A. J., 60, 85, 89, 91, 100. Ross, Prof. E. A., 27, 32. Ross, Jane H., '11, 12, Rüzéčka, Dr. Vlad., 14, 61, 121. Sadler, W. S., 42. Saleeby, C. W., 95. Schiff, Jacob H., 103. Schreiber, Dr. Georges, 15. Schroeder, Seaton, 101, 102. Sedgwick, Juluis P., 129. Sherbon, Dr. Florence B., 111. Siki and Dempsey, 124. Simonds, F. W., 91. Smallwood, W. M., 50. Osborn, Dorothy, '16 (see Bagg, Mrs. Hal- Smith, Mrs. Carrie W., 48. Osborn, Henry F., 14, 113. sey J.), 119. Osborn, Margaret, '20, 13. Osterhout, Prof. W. J. V., 119. Ottenberg, Dr. R., 3, 67. Painter, Dr. Theophilus S., 116, 136. Palmstierna, Baroness Ebba, 14. Papillault, Dr. G., 6. Park, Dr. Edwards A., 133. Parrish, Elizabeth I., 12. Park, Dr. Marion Edwards, 133. Paton, Dr. Stewart, 89, 91. Peabody, Ephraim, 43. Pearson, Dr. Mabel Hattersley, '10, 4. Péchère, Dr., 120. Perrier, Edmond, 13. Perry, Bliss, 57. John R.), 119. Solvay, Armand, 120. Spalding, Dr. Edith R., 60, 70, 101. Speck, Dr. Joh. Von Der, 113. Spencer, B. G., 97. Sprunt, Douglas, '22. 112. Stanton, Hazel M., 4. Stefansson, 55. Stermer-Koulik, Mrs. Nellie, 135. Stevenson, Dr. George, 52. Steward, Dr. W. J., 112. Stowell, Geraldine, '22, 112. Strong, Prof. Leon H., 91. Sugar, Rebekah, '19, 12. Sweet, Marion, '16, 12. Sweet, W. W., 24, 25. Sweetser. Ethel (Thayer), '13, 52. Talbot, 86. Perry, Elizabeth H., '16 (see Herman, Mrs. Tanner, Mrs. Frances, 22, 112. Peters, Ethel, 22, 112. Philiptschenko, Dr. Jun, 13. Pierce, John, 96. Pinard, Dr., 117. Pizarro, Francisco, 25, 26, 30. Plumb, A. H., 1. Pooler, Blanche F., 12. Popenoe, P., 27. Porter, William S., 58. Porteus, S. D., 52. Potten, Mrs., 2. Potter, Dr. H. W., 60, 70, 115. 141 |