OKLAHOMA ACADEMY OF SCIENCE 111 



4. , ^ — . 1917. The Speech Development of a 



Child From Eighteen Months to Six Years. Ped. Sem., XXIVj pp. 

 2C4-243. 



5. , . 1918. Ambidexterity and Delayed Speech 



Development. Ped. Sem., XXV, pp. 141-162. 



6. , . 1920. Concerning All Day Conversations. 



Ped. Sem., XXVII, pp. 166-177. 



7. Pelsma, J. 1910. A Child's Vocabulary and Its Develop- 

 ment. Ped. Sem., XVII, pp. 328-369. 



