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THE AMERICAN NATURALIST [ Vol. XLIII 



LEO ERRBRA 

 In Memoriam Leo Errera. — One can not ask for more loyal 

 friends than those who have undertaken to keep alive the 

 memory of the Belgian botanist Leo Errera, who died August 

 1, 1905, in his forty-seventh year. Botanists throughout the 

 world have been favored with publications relating to the life 

 of the lamented author and investigator, and volumes of his 

 collected papers. The little volume, "Notice sur Leo Errera," 

 by Leon Fredericq and Jean Massart tells pleasantly the story 

 of his life and labors and recreations, and doses with a chrono- 

 logically arranged bibliography of his writings, including nearly 

 tliree hundred curries. His first paper appeared in 1X74 when 



nually m increasing numbers, almost to the day of his death. 

 In fact, ten papers were published posthumously by friends and 

 colleagues who arranged or completed them for publication. 

 A list of the "distinctions" bestowed upon him, includes his 

 membership in various scientific societies, as well as the diplomas, 

 medals, etc, which were awarded him. 



Of the series of volumes planned to include a collection of 

 his works under the general title of "Recueil d'CEuvres de Leo 

 Errera" three are already published. The present arrangement 

 includes six volumes. Volumes I. and II. are devoted wholly 

 to Botany. The first contains papers on the Vegetation of the 

 Environs of Nice, a review of Schuebler's "Pflanzenwelt Nor- 

 wegens," the structure and modes of reproduction of flowers, 

 heterostyly of primroses, a critique on systematic botany, sug- 

 gestions as to certain neglected researches on bacteria and com- 

 pass plants. The second volume contains papers on the respira- 

 tion of plants. Latin names of plants, the scientific basis of 

 agriculture, plant physiology, alg«, Darwinism, relation of 

 plants to environment, the composition of plants, ravs of sun- 

 light. This list of subjects must serve to show the interest 

 which these volumes must have for the botanist. Volume III. 

 which is not yet published, will contain papers on general physiol- 

 ogy; Volume IV, not yet published, will include philosophical 

 papers, largely botanical; Volume V. is to be pedagogical and 

 biographical. Volume VI, containing miscellaneous poetical and 

 prose papers, has already appeared. It gives one another view 

 of this versatile man. 



Charles E. Bessey. 



