26. 
Thirty-first Annual Meeting 193 
Further observations as to effect of thyroid substance on plant pro- 
wefallacian\*\ (Giwaciiak) ae MA ee sl ide. ot A ne cee ne LS R. A. BuDINGTON 
The origin and development of the prairie in North America. (40 min.), 
(OL ESL EW ETE) 8 ge ie Al oR ANT Ae tee H. C. Sampson 
The significance of native vegetation in crop production. (35 min.), 
1 Va TIVES) VON San Sp SE Pee a A i i A. E. WALLER 
Energy relations of an acre of corn. (5 min.).............. E. N. TRANSEAU 
Some energy relations of aquatic life and their significance. (10 min.), 
L. H. TIFFANY 
Contributions to the genetics and cytology of parthenogenetic Taraxaca. 
SR er Se Re ek is hot es ayele inion od.n « PauL B. SEARS 
Reversal of the sexual state in the Japanese hop. (10 min.)..J. H. ScHAFFNER 
The occurrence and abundance of certain algae in Lake Erie. (10 min.), 
MaALcoL”m E. STICKNEY 
The census of flowering plants on certain small islands of Lake Erie. 
Beira ted) Mer Pherae PRES 0, He, Ma MR oe cada rateveve vie toe S wie Ma tcorm E. STICKNEY 
Causes and consequences of the irregularities in the glacial border in 
the Ohio Valley. (80min. (Lantern)............. G. FREDERICK WRIGHT 
Baplorations in eastern Bolivia. “(20'min.)s:2..25.05......6.- K. F. MATHER 
Some sub-surface rock channels filled with glacial material. (15 min.), 
J. ERNEST CARMAN 
A fault-zone breccia in the Bass Island series. (10 min.)..J. ERNEST CARMAN 
A disconformable contact at the base of the Sylvania sandstone. (5 min.) 
J. ERNEST CARMAN 
The Ordovician and Silurial seas of American Arctic and Subarctic 
regions and the relation of their faunas to contemporaneous seas of 
Biropeanvanecassman (QU/maimMs) Aare aati aero rcccsioe seen ne cul AuG. F. FoERSTE 
Some coastal geology of southern Florida. (20 min.).......... G. F. LAMB 
An interpretation of some Ohio geology. (12 min.)........... G. F. LAMB 
Richmond Ostracoda of especial interest. (10 min.)........ W. H. SHIDELER 
Additions to our knowledge of the Arnheim. (10 min.)....W. H. SHIDELER 
A Pliocene brackish water fauna near Alexander, La. (10 min.)..E. R. Smita 
A modification of Hobbs’s method of teaching interpretation of geologic 
TmDOS, — (AMO sabthae))yime-c obs OOO RUE See ee cee Oe ee ee E. R. SMITH 
An embryonic volcano in Adams County, Ohio. (15 min.), 
WALTER H. BUCHER 
Local geology of Cleveland from an economic standpoint. (25 min.), 
(CLekatieriay) Shes Gere to BOD ene er ELCs eae eee FRANK R. Van Horn 
The reopening and the end of the Linton (Ohio) Coal-measures, fossil- 
Piaielevostehe gatoyere Tugesg, ON UU koa ss 6) aes 5 tah ae J. E. Hype 
The fauna of the Berea Grit; a recurrent Bedford fauna, and its bearing 
Onsthevacclor the bedford. s i(lommin.))... wos: 0s co. sen. see ee J. E. HYDE 
Some psychology applied to Americanization. (20 min.)..GARRY C. MYERS 
Scientific direction of childhood—America’s greatest social and political 
“JES Sta eiSi owe varies ee GLE [Beast c bp |e ieee eee re HERMAN H. YOUNG 
Reliability of survey methods in individual diagnosis. (20 min.), 
FLORENCE FITZGERALD 
Limiting factors in human behavior. (5 min.)................./ A. P. Wise 
Waste of mental ability in our school system. (10 min.)...HELEN MARSHALL 
., (a) Some studies in progress in the Cleveland School of Education. 
(b) Some data on learning curves. (30 min.)............. GARRY C. MYERS 
College men in the penitentiary. (20 min.).............. CARL MURCHISON 
