H2 THE SHORE 



these tanks, and when a large number of localities are 

 to be visited, it is as well to keep a tank for each. 



Lastly, we would emphasize the importance of duly 

 labelling all tubes, bottles, and specimens, with locality 

 where obtained and date. A duplicate of the label 

 may be obtained with carbon paper, and is often useful. 

 It is advisable to use numbers as well as writing, the 

 record of these numbers being kept in a separate note- 

 book. If due care is taken in the first instance, the 

 bottles, etc., can be packed as filled and sent home, 

 without being further looked after in any way. When 

 bottles go wrong, it is generally due to their being too 

 tightly crammed with animals, insufficiently soaked in 

 weak spirit before being placed in 70 per cent, spirit, 

 or to the corks or covers being carelessly replaced so 

 that air can get in, and consequently fluid and vapour 

 can escape ; the latter may be avoided by dipping their 

 heads when thoroughly covered up into melted paraffin. 

 A piece of string placed in the mouth of a bottle while 

 the cork is being inserted allows the cork to be screwed 

 home, air escaping by its sides ; it can subsequently be 

 pulled out. 



