The Chronica Botanica Co. — International Plant Science Publishers 



A New Series of Plant Science Books: — 



1, MacDougal: Tree Growth {out of 10, Wulff: Historical Plant Geography 



print) (pp. 223, $4.75) 



2, Grant: Woo6.T?n\p {out of print) 11, Schopfer-Noecker: Plants and Vita- 



3, Darrah: Principles of Paleobotany mins (pp. 300, $4.75) 



{out of print) 12, Erdtman: Pollen Analysis (pp. 239, 



4, Pfeiffer: Experimentelle Cytologic $5.00) 



{out of print) 13, Bawden: Plant Viruses and Virus 



5, Ed. 1 out of print, see sub 13 for ed. 2. Diseases, Second entirely revised edi- 



6, Guilliermond-Atkinson: The Cyto- tion (pp. 294, $4.75) 



plasm of the Plant Cell (pp. 247, 14, Hoagland: Inorganic Plant Nutrition 



$4.75) (pp. 226, $4.00) 



7, Reed: A Short History of the Plant 15, Wodehouse: Hayfever Plants (pp. 



Sciences (pp. 323, $5.00) 245, $4.75) 



8, Baldwin: Forest Tree Seed (pp. 240, 16, Verdoorn {ed.): Plants and Plant 



$4.75) Science in Latin America (pp. xl + 



9, Lloyd: Carnivorous Plants (pp. 352, 384, $6.00) 



$6.00) 17, ZoBell: Marine Microbiology (pp. 



240, $5.00) 



Volumes in press or in preparation include: Wilde, Forest "Soils and Forest Growth; Johansen, Plant 

 Embryology; Dachnowski-Stokes, Peat; Kelley, Mycorrhiza in Plants; Condit, The Fig; Uphof, Dic- 

 tionary of Economic Botany; Crocker & Barton, Seed Physiology, and G. M. Smith (ed.). Manual of 

 Phycology. 



CHRONICA BOTANICA, an international collection of studies in the method, philos- 

 ophy, and history of biology and agriculture, founded and edited by Frans Verdoorn, 

 is published bimonthly. It aims primarily at the promotion of (1) international relations 

 in the plant sciences, (2) studies in the method, philosophy and history of pure and ap- 

 plied biology, (3) a better understanding between specialists in various branches and 

 their relations with the outside world. An annual volume contains about 600 pages of 

 memoirs, directories and census of current activities, articles and discussions, annotated 

 reprints of important and rare classical papers, news, reviews and notices, etc., at $7.50 

 to regular subscribers (post free, foreign and domestic). — Back volumes are available at 

 $7.50 {paper) or $8.75 {buckram), postage extra. — Binding cases may be obtained for 

 recent volumes at $0.75, prepaid (post free, foreign and domestic). 



The following recent and forthcoming issues of Chronica Botanica are available to non-subscribers: — 

 Browne, A Source Book of Agricultural Chemistry (pp. 290, $5.00). — Rafinesque, A Life of Travels (pp. 

 72, $2.50). — Browne, Thomas Jefferson and the Scientific Trends of his Time (pp. 64, $1.25). — Jack, 

 Biological Field Stations of the World (pp. 80, $2.50). — • de Saint-Hilaire, Voyages au Bresil et Paraguay 

 ($2.50). — Howard, Luther Burbank, A Factual Study (ca. $3.75). — Arber, Goethe's Botany (ca. $2.50). 

 — Cooper, Arboretums, their Aims and Scope (ca. $2.50). — E. D. Merrill, Merrilleana - Selected Gen- 

 eral Writings (ca. $3.75). — Stehl^, Histoire de la Botanique et de 1 'Agronomic aux Antilles Francaises 

 (ca. $5.00). 



Annales Cryptogamici et Phytopathologici, our new serial, consists of memoirs (each form- 

 ing a separate volume), devoted to general and systematic cryptogamy and to phyto- 

 pathology. It continues Annales Bryologici. — Vols. 1, Garrett, Root Disease Fungi 

 (pp. 177, $4.50) and 2, Horsfall, Fungicides (pp. 240, $5.00) have recently been is- 

 sued. — The following vols, are in press: 3, Fulford, The Genus Bazzania in C. and S. 

 America (ca. $5.00); 4, Chester, Cereal Rusts (ca.$5.00); 5, Copeland, Genera Filicum 

 (ca. $5.00). 



Annates Bryologici, a journal devoted to the study of mosses and hepatics, of which we published (in 

 the beginning in cooperation with Messrs. Nijhoff) 12 volumes and 4 supplementary volumes between 

 1927 and 1939, is now being continued by the Annales Cryptogamici et Phytopathologici (see above). 

 Complete sets and single vols, of Annales Bryologici are still available at $4.00 a volume. The bryolo- 

 gical e.xsiccati formerly issued by Dr. Frans Verdoorn: Bryophyta Arduennae Exsiccata (dec. 1-5, 

 1927/29), Hepaticae Selectae et Criticae (11 series, 1930/39) and Musci Select! et Critici (7 series, 1934/40) 

 are no longer available. 



Orders may be sent directly to the Chronica Botanica Co.. to any bookseller or to their authorized agents, as listed 

 on p. vi, in New York City; San Francisco, Gal.; Ottawa, Ont. (Canada); Mexico City; Bogota and Medellm 

 (Colombia); Lima (Peru); Santiago (Chile); Rio de Janeiro and Sao Paulo (Brazil); Buenos Aires (Argen- 

 tina); London; Groningen (the Netherlands); Paris; Torino (Italy); Lisbon (Portugal); Moscow; Calcutta, 

 Bombay and Madras (India); Johannesburg (South Africa); and Melbourne (Australia). 



The Chronica Botanica Co., Waltham 54, Massachusetts, U.S.A. 



— Established in Leiden, Zuid Holland, in 1033 — Cables: Flora, Wallham, Mass., U.S.A. — 



