3r. B: D. Davjta,
ma. h_s;lrah Lib:.
&Ll E. 6'3 Ytreet,
New Xork WI ILX.

do&ma Lederberg


J. A. C. S.

Communicationa to the Zditor
  Method ef Counting

Maximum lumber of Words - 500

a. Bach complete word or number aa one word.

b.  As one word - hyphenated wards, numbers with unitr,
  pereon* B cmplete name.
    e.g.  5 grams, 5 CC., tw H, 5.06$;
  empirical fonuulaa
    e.g. c3~H4806
e. Literature citations a8 in text, i.0,
  "(1) B. $. Sxlth and Jshn Jones, This Journal, &&!, (1948)"
   would be ceunted a8 nine worda.  (R. E. Smith and John Jones
   would both be counted a8 one word).

Tables

a. Bach word of title as one word.

b.  Bach word of column heads as one word.

c. Each entry in table as one word.
Tables of Single-Column Width.

Btiures and Structural Formulas

a. #umber of printed linea they will occupy and multiply by the
average nuaber of words (9) in a single line of text.

Title of Ceamunication.

Authora' napes.

Address.

"Sir".

Date, if any, or d&e of mceipt.