No. 504] NOTES AND LITERATURE 



811 



the fossil stickleback from Nevada, Gasterosteus leptosomus 

 Hay, with Merriamella doryssa. The species stands as Gas- 

 terosteus doryssus. 



In the same Contributions, Dr. Gill gives an account of the 

 habits of the miller's thumbs or blobs. He shows that U ran idea 

 can not be maintained as a genus distinct from Cottus and that 

 the common species must be called Cot! us riehardsoni, not C. 

 ictalops. 



In the Transactions of the Wisconsin Academy of Science, 

 Mr. E. H. Johnson discusses the variations in number and size 

 of the pylone caeca in Sun-fishes. In each species a variation 

 of two or three was found. Thus in species as the rock bass, 

 having on the average eight caeca, the number ranges from six 

 to nine. In the calico bass, with nine, the number ranges from 

 eight to eleven. David Starr Jordan. 



THE INHERITANCE OF SEX IN HIGHER PLANTS 



Digest of Professor C. Correns's Memoir 1 — It is stated in the 

 preface that there is given here a more detailed reiteration of 

 a report made September 18, 1907, to the united sections for 

 zoology and botany of the German Naturalists in Dresden. 

 Experiments in cross-breeding closely related species of plants 

 of different sexual type, carried on since 1900, led to such re- 

 markable results that an account was long withheld. When a 

 repetition of experiments yielded like results, and a reconsidera- 

 tion of the deductions made revealed no flaws, conclusions were 

 announced. For the plants examined the results are regarded 

 decisive; but their wider application must be ascertained by 

 further investigation. 



Correns refrains from an historical review of the literature 

 and attempts merely to present some new facts and relate them 

 to previous facts. He does not wish, nor does he claim to be 

 able, to construct a new theory regarding the nature of sex. He 

 believes that there is much in common between his results and 

 those reported by E. B. Wilson for Hemiptera. Finally he ex- 

 plains that by "anlage" of an organ as used in his paper he does 



»"Die Bestimmung und Vererbung des Geschlechtes nach neuen Ver- 

 suchen mit hoheren Pflanzen. ' ' Abstract presented before a recent 'meeting 

 of the Medico-Biological Journal Club of the University of Virginia, by 

 H. E. Jordan, adjunct professor of anatomy. 



