Α ΝUMBER of words compounded with κατά, περί, πρό, πρός, σύν, υπέρ, and υπό, are left undefined. The proper directions with regard to them are given under each of these prepositions. The same remark applies to words whose first component part is φιλο-, ψευδο-. The reader is of course supposed to know the meaning of the second component part. This retrenchment is to be attributed to absolute necessity, the alternative being to give up the intention of publishing the book.
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