CONTENTS. 



PAGE 



Table op Contents __ iv 



List of Officers _ _ iii 



Papers Published. March, 1920, to December, 1923 : 



1. Table of Contents and Price List, Volumes pp. 



I-XXIII— Issued August, 1921 16 



2. C. H. TiTRNER. — Ecological Studies of the Ento- 



mostraca of the St. Louis District. Part I. 

 Diaptomus pseudo-sanguineus sp. nov. and a 

 Preliminary List of the Copepoda and Cla- 

 docera of the St. Louis District, Plates I-IV. 

 — Issued November, 1921 _ 25 



3. C. H. Danporth. — Bufo Fowleri Putnam in Mis- 



souri. — Issued December, 1921 _ 8 



4. Leo Ijoeb. — Cancer, Its Course and Its Causes. — 



Issued April, 1922 _ _ „._ 10 



5. Augustus G. Pohlman. — Do We Hear Sound ? — • 



Issued April, 1922„^ „„_ _ 7 



6. F. W. Frerichs- — Development of the Chemical 



Industry in the Last Hundred Years. — Issued 

 April, 1922 16 



7. Phil Rau. — Ecological and Behavior Notes on 



Missouri Insects. — Plates V-VIII. — Issued 



June, 1922 71 



8. Otto Widmann. — Extracts from the Diary of Otto 



"Widmann : Nesting Habits of the Purple Mar- 

 tin; How Young Birds Are Fed; Where the 

 Martins Roost; The Crows' Winter Roost at 

 St. Louis; Our Birds in Winter; Chaetura 

 Pelagica (Linn.) Chimney Swift; Birds of 

 the Ozarks ; Reminiscences of a Visit to Bran- 

 son and White River, Spring of 1906. — Issued 

 December, 1 922 _ „._ 77 



9. C. II. Turner, An Appreciation of, by A. G. 



Pohlman; The Scientific Work of, by Phil 

 Rau ; Posthumous Papers : Tropisms in Insect 

 Behavior; The Homing of the Ilymenoptera ; 

 The Psychology of "Playing 'Possum". 

 Edited by Phil' Rau.— Plates IX-X.— Lssued 

 December, 1923....- .- 54 



