398 BOTANICAL GAZETTE [xov 



Flora Boreali-Americana. — ^It is generally conceded that AndrjE ^NIichaux 

 was not the real author of this work, and that it should be credited to Richard. 

 Clos^'^ has brought the subject up again, and we learn that Kunth in 1825 declared f 



positively that Richard was the anonymous author of the work ; and that Richard 

 published very little himself, leaving to his friends and pupils the publication of 

 many of his most important contributions. Beauchardat made a similar declara- 

 tion before the faculty of medicine in Paris, in 1853. — Theo. Holm. 



Origin of asparagin in seedlings. — ScHULZE^^ has contemplated the work of 

 others in connection with some of his own and offers in consequence the view that 

 by the oxidation of the primary products of the dissociation of proteid (mono- 

 amino-acids, hexone bases) ammonia is formed, and that the ammonia is tlien used 

 in metabolism for the synthesis of asparagin and glutamin as the case may be. 

 That enzymes are potent in the oxidation of the primary products mentioned he 

 regards as probable. — Rayiviond H. Pond. 



Photosynthesis. — ^An excellent but all too brief resume of the recent progress 

 and present status of the problems of photosynthesis and the role of chlorophyll, 



German 



J 



It was 



Usher 



would have modified radically some of its statements. — C. R, B. 



Myxomycetes of Colorado. — Bethel and Sturgis have begun 

 tion of a series of contributions under the general title "The Myx' 



Fungi of Colorado,'^ the first number being a presentation of the IMyxomycetes 

 by Sturgis.31 This first bringing together of the slime moulds of the state shows 

 almost 100 species, representing 28 genera. — J. M. C .:! 



Chromosomes of Oenothera mutants. — Miss Lutz^^ ij^s counted the chromo- 

 somes in the root tips of seedlings of O. Lamarciiana and of O. gigas, one of its 

 mutants. The point of chief interest is that the number (probably 28) in the 

 somatic cells of this mutant is double that found in the parental form.— J. M. C. 



^\ Clos, D., La premiere flore de TAm^ique du Nord et Louis Claude Richard- 

 Bull. Soc. Bot. France 53:667. 1906. 



38 SCHTJLZE, E., Zur Frage der Bildungsweise des Asparagins und des Glutamins 

 in den Keimpflanzen. Ber. Deutsch. Bot. Gesells. 25:213-216. 1907. 



^9 KoHL» F. G., Kohlensaure-Assimilation imd CWorophyll-Funktion. Ber. 

 Deutsch. Bot Gesells. 24:(39)-(54). 1907. 



30 See Box. Gazette 43:144, 1907. 



31 Sturgis, W- C, The Myxomycetes of Colorado. Colorado Coll. Publ., Sci 

 Series 12:1-43. 1907. 



LUTZ 



ana 



Science N, S. 26:151, 152- 1907. 





/ 



