The arrangement which was established between the Smithson 
stitution and the Atlantic cable companies in 1873, by which fr<| 
graphic transmission of astronomical discoveries was granted 1) 
Europe and America, has been continued during the past year. 
The following is a list of the small planetoidal bodies discow 
1S77: * 
170.. . 
171.. . 
172.. . 
173.. . 
174.. . 
175.. . 
176.. . 
177.. . 
178.. . 
179.. . 
ISO (?) 
X limber. 
Name. 
Myrrh a. 
Ophelia 
Baucis.. 
Idunna 
Eva (?) 
Discovered- 
Jan. 
Jan. 
Feb. 
Aug. 
Sept. 
Oct. 
Oct. 
Nov. 
Nov. 
Nov. 
Dec. 
10.1877 
13.1877 
5.1877 
2.1877 
2.1877 
1.1877 
14, 1877 
5.1877 
6.1877 
11.1877 
29.1877 
By— 
Perrotin . - - 
Borelly- 
_do .. 
_do. 
W atsou.... 
_do .. 
Peters. 
Paul Henry 
Palisa -- 
Watson.... 
Palisa. 
T( 
M 
Ai 
Cl 
Pt 
Pc 
A't 
pa 
Note .—Lwnen (141) was independently discovered by Watson and Borelly in 
August i 
(161) by Palisa in October. 
EXCHANGES. 
The literary and scientific exchanges inaugurated by the Ins* 
have increased during the past year in a greater ratio than ever 
Four hundred and six boxes, averaging 7 cubic leet each, with 
CIRCULAR RELATIVE TO SCIENTIFIC AND 
LITERARY EXCHANGES. 
The Smithsonian Institution, among its operations for the increase 
and diffusion of knowledge among men, organized, many years ago, 
a system of exchanges, for the purpose of more readily distributing 
its own publications and of receiving returns for its library; at the 
same time offering its services to other establishments requiring 
similar facilities* It has enlarged this system, continuously, until 
it has become of such magnitude as to require for its maintenance 
one-fourth of the entire income from the Smithsonian fund. The 
greater part of this increase is on account of the transmissions of 
the departments and bureaus of the United States Government. 
It is no longer possible for the Institution to meet these expenses, 
and a small charge will, hereafter, be made on all matter sent by 
and received for these public offices. For the present no such pay¬ 
ment will be required of learned societies or individuals, unless 
their transmissions are of unusual magnitude, although the right 
to make a charge is reserved. 
To facilitate the business connected with the system of the Smith¬ 
sonian exchanges the following rules have been adopted: 
1. Transmissions through the Smithsonian Institution for foreign 
countries to be confined exclusively to books, pamphlets, charts, and 
other printed matter, sent as donations or exchanges, and not to 
include those procured by purchase. The Institution and its agents 
will not receive for any address apparatus and instruments, philo¬ 
sophical, medical, etc., (including microscopes,) whether purchased 
or presented; nor specimens of natural history, except where special 
permission from the Institution has been obtained. 
2. The Departments or Bureaus of the United States Government 
to pay to the Smithsonian Institution five cents per pound on their 
packages, which includes all expense of boxing, shipping, and 
transportation. 
3. A list of the addresses and a statement of contents of each 
