100 SPENCER FULLERTON BAIRD 
From John Cassin to S. F. Baird. 
Puiapa. 21 Aug. 1843 
Dear Barrp:— 
I should have written to you ere this, but have delayed it, hoping 
to be able to get out the Academy’s proceedings for July. 
Our Secretary, Dr. Zantzinger, has been out of town nearly 
from middle of July to middle of August, and last Tuesday evening 
was the first time I had an opportunity of urging the matter to him 
personally—he examined his documents, and found we had not 
enough to make four pages of matter for July, and so it must be de- 
layed until first September. The printing will commence next week, 
immediately after the last meeting in this mo., which will be 29th, 
so that by the first we shall have the Number ready, when I will 
forward you copies immediately, and will also send copies to any 
person that you may designate. ‘The paper will be published ver- 
batim, with the extensive exception that I took the liberty of inserting 
“Swainson” after 7'yrannula in the title of the paper—making it 
read “Species of the Genus Tyrannula, Swainson” etc. I hope it 
will be in good time. 
Nothing going on—Brazilian expedition gets off next week—so 
I hear. te 
From John Cassin to Spencer F. Baird. 
Puita. 6 Sept. 1843. 
Dear Barrp, 
I have sent you two copies of Proceedings just out and have sent 
all the others as you requested except those to your brother at 
Washington, which I shall send to-morrow, not having enough of 
them at the store. 
Your paper reads well—and I will see that copies of this number 
are sent to most of the Naturalists, in this country at least. The 
proceedings, you know, are sent as published to all the European 
SOCICLICS:. ce fel 
The following letter seems appropriate here, though a 
little out of chronological order: 
