Dear Sir: 
We send in this mail copy of the new edition of the Natural- 
ists' Directory. We trust you will make it convenient to remit for 
the amount of the enclosed bill by return mail. The expense of col- 
lecting these small amounts, if payment is delayed, is very large, 
and the annoyance to us, as well as to yourself, is much more than 
the small amount involved. Most of our subscribers make prompt re- 
mi t tances . 
All subscribers from whom we do not hear within thirty days 
will be drawn on at sight, and we will pin your subscription blank 
on the draft, in order that there may be no misunderstanding in re- 
gard to the matter. Please have the kindness to honor our draft, if 
you do not remit previously. 
Yours truly, 
