THE GERM PLASM OF THE OSTRICH 

 PROFESSOR J. E. DUERDEN 



Rhodes Uxiversity College, Grahamstown, South Africa 



ers hereditary deter- 



In til.- alx.v.' .•h.;,r. ruiMMM. | , 1 ini - . ^(.MU'lliii.'^ with 

 MipiMMiii- niiiplll'KMtion. Dr. h\'i,M.inii<l P<;irl/ in the 

 piVH.lrntinl ad.ln-. lu-for.- tlu- V<.rk Mcctin.o- of the 



Ani.Tir.-iii Socirly of Xaturali^t^, IHIC, contrasts the atti- 

 tn(h' of two -cctioti^ of Aiiiccican .ucncticists with regard 

 to the iiiaiiiH'r of cliati^u-o- in the uvnn i)h-isni, as affording 

 so niiieh somatic material upon which selection may pos- 

 sibly work in tlie evolution of animals and plants. 



So much evidence is ahcady av ailable for discussion on 

 the merits of the one si<h' or the other that it would appear 

 gratuitous to add more, and one can well api)reciate the 

 advice which Tearl ui\-e- to uet down to mon-, dud niorc 

 searchiyifi, ii/ r, ..I'ninl - a.^ in 'h, <,( iim, Ih (fac- 



torial) vatiatioH. The ca>e of o-tricli breeding in South 

 Africa however affords such direct evidence bearing upon 



i"The Selection Problem," American Naturalist, February, 1917, 



