OKLAHOMA ACADEMY OF SCIENCE 143 



Verbs : pick up, hang, write, carry, sew, listen, flop, wake up, 

 salute, wink, look, get, creep, slip, touch, pinch, punch, wait, dive, 

 find, fix ii, hold, put, show, wade, wind. 



Pronouns : I, it. 



.■\djectives ; shiny, new, baked, tiny, funny, afraid, other. 



Adverb : away. 



Prepositions: with, at, beliind, in. 



Interjections: whoa, my goodness, gee, good morning. 



The table gives a summary of the numbers of words of each 

 m.onths vocabulary. 



Number of Words Learned at the Different Ages. 



8-13 14 15 16 17 18 Total Per 



Nouns 



Verbs 



Pronouns 



Adjectives 



Adverbs 



Prepositions 



Interjections 



Total New Words 31 39 70 82 160 144 523 100 



Total Vocahuiary 31 70 140 222 378* 523 



•'"Three interjectiors and one adverb were dropped at about this time.' 



This child has the largest vocabulary that have j^et been pub- 

 lished for the following ages: 14, 15, 17 and 18 months. At 13 

 months Mrs. Hall's son used 7 more words than Duncan did, and 

 at 16 mionths Mrs. Langenbeck's daughter is credited with 7 more. 

 The vocabu'aries next in size to those of Duncan's are as follows : 

 at 14 and 15 months Mrs. Hall's son attained 58 and 105 words 

 respectively; at 17 months Miss Shinn's niece had mastered 34t> 

 words and at 18 months Mrs. Marlindel'-'s daughter (cited by 

 Gales) had a vocabulary of 233 words. This is less than half the 

 size of Duncan's vocabulary at this age, although it is the largest 

 of 39 vocabularies tha.t had previously been collected (Oatman- 

 Blachiy). The largest published vocabularies for 19 and 20 months 

 are those of Bohn's daughter and contains 294 and 383 words re- 

 spectively. At 21 months there first appear vocabularies that 

 surpass in size Duncan's at 18 months, viz., Mrs. Martindell's 

 daughter with 579 words and Miss Shinn's niece with 758. 



Literature 



Bohn, Wm. E., 1914. First Steps in Verbal Expression. Ped. 

 Sem. XXI, 578-595. 



