THE GROWTH OF KNOWLEDGE

SATURDAY, JULY 16, 1932. • AU articles submitted for pUblication in this journal Bhould be t2lped with double or treble spacing. Oarbon .copies should not be sent. Authors are requested to avoid the use 01 abbreviations and not to underline ef.ther words qr phrases. Reference, to articles and books should be oarefuU21 .cheo1ced. In a referenee the lonowing information. Bhould be 'given without abbreviation: Initials 01 author, surname of author, lun title of article, name 01 journal, volume, I,mdate (month, da21 and 21ear), number 01 the fir,t paoe of the article. II a retereeoeis made to an alI,tract 01a paper, the name Of the original jourt14l, together with that of the journal in WM.ch the abstract has appeared, should be given with fun date in each instance. Authors who are not acCU8tome4 flo preparing drawings or photographic prints 10' reproduefion, are invited to seek the advice of the Editor.