8 
hidiana University Studies 
total vocabulary and taking- them all into the reckoning, then 
at the end of his study of Caesar he should have learned the 
source words of 20.21 per cent of his total vocabulary, and of 
that part of it which he uses 16.80 per cent of the time. 
By the close of his year’s study of Cicero the pupil should 
have added to his knowledge the source words of 14.81 per 
cent more of the Latin derivatives in his vocabulary, and by 
the end of his study of Vergil he should have added the 
source words of still 15.29 per cent more of his Latin deriva- 
tives. A pupil, then, who has had four years of high school 
Latin, provided he has learned the Latin words recommended 
by Professor Lodge and supposing the 10,000 words of Pro- 
fessor Thorndike’s Teacher’s Word Book to comprise his Eng- 
lish vocabulary, has become acquainted with the source words 
of 74.08 per cent of the Latin element of his vocabulary and 
of the words that he uses 77.82 per cent of the time when he 
uses any Latin derivatives. Reckoning in his total vocab- 
ulary, he has learned the source words of 33.96 per cent of 
his 10,000 English words and of those which he uses 28.10 
per cent of the time. 
In the course of his high school Latin, the pupil will have 
met, but ordinarily would not be required to learn, the source 
words of still 11.71 per cent more of his Latin derivatives. 
These have not been taken into account in the reckoning 
above. If they were, at the end of his high school course in 
Latin the pupil would have learned the source words of 85.79 
per cent of the Latin derivatives in his vocabulary. 
It would seem, then, that Professor Lodge’s 2,000 Latin 
words are of almost as much value for giving a knowledge 
of the Latin element among the most commonly used English 
words as they are for giving a ready reading ability in Latin. 
It would seem, further, that the vocabulary of the traditional 
Latin read in the secondary school is as valuable as could 
be hoped for in giving a knowledge of the source words of 
the Latin element among the most commonly used English 
words, since even the minimum part of it that should be 
memorized includes the source words of three-fourths of the 
Latin derivatives among the most commonly used English 
words, and since, taken as a whole, it includes the source 
words of well over four-fifths of these Latin derivatives. 
