Editorial 



In recent years there has been a notable increase in the desire for 

 the use of photographic illustrations on the part of authors of 

 articles submitted to the Journal. To an increasing extent such 

 use is coming to be more than a merely helpful or ornamental acces- 

 sory; it is often an essential means to an adequate presentation of 

 results. In a like manner there has been a marked growth in the 

 use of maps, sections, diagrams, and other graphic matter, as also 

 of analyses, computations, statistics, and similar matter assembled 

 in tabular and diagrammatic forms. It seems inevitable that the 

 proportion of these classes of relatively expensive matter will con- 

 tinue to become greater. To this imperative increase in the expense 

 of properly illustrating the matter of the Journal, there is added the 

 greater cost of printing and publishing resulting from the general 

 advance in prices. To meet the demands of these changed condi- 

 tions, it has been decided to raise the price of the Journal to sub- 

 scribers, beginning with the twentieth volume, except that current 

 subscribers may renew their subscriptions for one year at the present 

 rate if they do so previous to July i, 191 2. Details may be found 

 in the Publishers' notice in the advertising section of this issue. 



T. C. C. 



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