THE YOUNG PROFESSOR 219 
to be an analysis at the beginning of the vol. and a copious index, 
the fuller the better, at the end. This should be begun right off. 
Let me hear soon from you on these matters. Mary joins in love to 
jet. i 
Harr Yours affectionately, 
S. F. Barrp. 
P.S. I hope to be in funds enough to pay Irvine his interest, 
by the time it is due. 
From Joseph Henry to Spencer F. Baird. 
New York, Sep. 9th, 1850. 
My pear Sir:— 
I have been oscillating continually since we parted between this 
place, Princeton, and Phil®. 
Your letter of the 29th ult. was received by me at Princeton 
just as I was on the point of getting into the hack for Phil®. I ex- 
pected to return the same day, but was unavoidably detained until 
the end of the week, several days after the time mentioned as that 
of the decision of the Bank as to your note. As I heard nothing 
farther from you on the subject, I concluded that you found no 
difficulty in procuring an endorser. 
I have delayed writing to you a few days until I could give you 
some definite information as to my movements. 
I concluded last Saturday to start immediately for Washington, 
but am now called to Albany on some business of my own as well as 
that of the Institution. I shall return this week and immediately 
start for Washington and if no accident prevent, I shall be there on 
the 16th. 
My family will not return to Washington until the middle of 
Oct. or perhaps the Ist of Nov. 
You have seen in the papers the account of the death of Prof. 
Troost. This will perhaps give us some trouble relative to the publi- 
cation of his paper particularly with reference to getting possession 
of the specimens for the use of the engraver. I remain, 
Truly your friend, 
JosepH Henry. 
