6 
PREPARATION OP MANUSCRIPTS 
illustrations 
Only illustrations which are of good quality and which are necessary 
to a clear understanding of the report can be accepted for publication. 
Each illustration must be specifically referred to in the text. 
So far as possible, text figures (line drawings) should be used in pref¬ 
erence to plates (half-tones or color illustrations). 
Text figures. —Maximum width, 4 % inches; maximum length, 6)4 
inches. 
The legend should be inserted in the text immediately following the 
first reference to the illustration. 
The proper number of the text figure, the title of the article, and a 
copy of its legend should be attached to each figure. 
Text figures should be numbered in the order of their reference. 
Arabic numerals should be used in numbering and in referring to 
text figures, as “fig. 13.“ 
When separate figures in an illustration are referred to, each figure 
should be designated by a capital letter (A, B , C) in pencil on the 
margin of the illustration. When referring to a part of a figure—for 
example, to a diseased spot on a leaf—use small letters (a, b % c) in pencil 
on the margin of the illustration. 
Plates. —Width, 4 yi inches; length, >j )4 inches. 
Legends of plates should not be inserted in the text, but should be 
placed at the end of the manuscript. 
Photographs intended for plates should be of a glossy finish and 
should be unmounted. These should be attached slightly at the cor¬ 
ners to letter-size paper on which should be written the plate number, 
title of article, and a short identifying legend. 
The title of the paper should be attached to each plate. 
Arabic numerals should be used in numbering plates and in referring 
to them in the text, as “PI. 29.” Separate figures in the plates should 
be lettered in capitals (A, B , C, etc.). Parts of the separate figures 
should be designated by small letters (a, b , c , etc.). 
Color plates should be lettered alphabetically, as “PI. A.” Sepa¬ 
rate figures of color plates should be designated by arabic numerals, as 
“Plate H, figures 2 and 4.” 
citations to literature 
If there are seven or more citations to literature, they should be grouped 
together at the end of the paper under the heading “Literature cited;” 
if less than seven, they should be given in footnotes. Only references 
cited in the text will be printed. 
If the original of an article has not been consulted, the following 
statement should be added to the citation: “Original not seen.” 
If only an abstract can be cited, the word “abstract” should follow 
the title. (See example A.) 
