REVUE BIBLIOGRAPHIQUE 
Proceedings of the National Academy of Sciences (Washington). 
Articles botaniques : 
I, 1915. 
Trelease (William) : Phoradendron. — Campbell (D.-H.) : The 
morpbology and relationships of Podomilrium malaccense (Steph.) — 
Chamberlain (Ch.-J.) : A phylogenetic sludy of Cycads. — Crocker (W.) 
and Groves (J.-F.) : A method of prophesying the life duration of 
seeds. —* Goodspeed (T.-H.) and Clausen (R.-E.) : Variation of 
flower size in Nicotiana. — Goodspeed (T.-H.) : Parthenocarpy and 
parthenogeneses in Nicotiana . — Babcock (E.-B.) : Walnut mutant 
investigations. — Lipman (Ch.-B.) : The nitrogen problem in arid soils. 
II, 1916. 
Campbell (D.-H.) : The archegonium and sporophyte of Treubia 
insignis Goebel. — Rose (J. -N.) : Recent explorations in the Cactus 
deserts of South America. — Osterhout (W.-J.-V.) : The nature of 
meehanical stimulation. — Farlow (W.-G.) : The marine Algæ of the 
Pacific. — Campbell (D.-H.) : Some problems of the Pacific Floras. — 
Haas (S.-C.) : The excrétion of acids by roots — Harris (J.-A.) : The 
Vriesian Mutation of the Garden Bean, Phaseolus vulgaris. — Brooks 
(S.-C.) : New déterminations of permeability. — Trelease (W.) : The 
Oaks of America. — Bowman (H.-H.-M.) : Physiological studies of 
Rhizophora. 
III, 1917. 
Rosenbaum (J.) : Studies of the genus Phytophthora. — Miller 
(E.-C.) : Daily variations of water and dry matter in the leaves'of Corn 
and the Sorghums. — Campbell (D.-H.) : Growth of isolated sporo- 
phytes of Anthoceros. 
