GENERAL REMARKS 
All descriptions of Natural History Collections may be 
easily sold if they are well collected and arrive in a perfect 
state of preservation. 
They must be sent home frequently and in in small por- 
tions; for the following reasons. 
1° It is easier to sell small than large collections. 
2° If the package or preparation has been done badly, 
your correspondent will forward you immediately new ins- 
tructions which will permit to make the next sending with 
- * 
more success. 
