No. 545] 



NOTES AND LITERATURE 



309 



Doflein is inclined, to accept the evidence that Schaudinn's 

 account of Entamoeba histolytica is based in part upon phe- 

 nomena attendant upon processes of degeneration and suggests 

 that Viereck's E. tetragena is probably the most widespread 

 form causing amoebic dysentery, and that the two are possibly 

 identical, but that the organism according to the rigid laws of 

 priority should be called Entamoeba dy sentence (Councilman 

 and Lafieur). 



The doubtful group Chlamydozoa established by Prowazek 

 for that group of immunizing organisms with a filterable virus, 

 the supposed etiological factors in such diseases as vaccinia, 

 variola, trachoma, molluscum contagiosum and epithelioma con- 

 tagiosum, is still denied admittance by the author to the Pro- 

 tozoa on the ground that the minute structures described by 

 Prowazek are not themselves with certainty proved to be living 

 organisms. Doflein admits, however, that the evidence is con- 

 stantly increasing that we have to do in the case of these dis- 

 eases with parasitic organisms, but thinks they may be more 

 closely related to the bacteria than to the protozoa. 



It is a matter of regret that the non-parasitic groups, such, for 

 example, as the pelagic Foraminifera and Radiolaria, and non- 

 parasitic flagellates can not receive in a work of this sort com- 

 mensurate treatment with pathogenic forms of confessedly great 

 biological, as well as medical and hygienic interest. The author 

 expresses the hope that medical research may in the near future 

 so clear up contested points that less space will be required for 

 the discussion of pathogenic forms. The present output is, 

 however, not very promising for a reduction in extent in this 

 field. The fact is that a six-volume edition of the Protozoa in 

 Bronn's "Thiereich" is needed to give anything like an ade- 

 quate review of the results now achieved in the fields of Pro- 

 tozoology. 



Charles Atwood Kofoid 



University of California 



HEREDITY 



H. M. Leake 14 gives additional results of his studies of inheri- 

 tance in cotton. The flower color factors found were yellow, 

 Pale yellow and red, the latter being due to red sap color which 

 showed not only in the flowers but in stems and leaves as well. 



""Studies in Indian Cotton." Jour, of Gen., Aug., 1911. 



