40 NATURALISTS' ASSISTANT. 



pulled in and washed in a bucket of water. On placing 

 this water in the light it will be seen to be filled with 

 microscopic forms. The best time ,and place for using the 

 net are in protected harbors when the surface is smooth and 

 the sea phosphorescent. A place where two currents meet is 

 especially productive. Surface skimming was first employed 

 by Johannes Miiller. 



After storms, it is well to examine the beaches to obtain 

 the deep water forms which have been cast on shore. 

 Among the " roots " of the " Devils' aprons " (Laminaria) 



FIG. 16 



will be found shells and starfish, while on the fronds frequently 

 occur Sertularians and Bryozoa. 



Fish stomachs are another source of obtaining deep-water 

 forms, and they frequently contain rare shells. The fish 

 themselves should be carefully examined for external and 

 internal parasites. 



The collections should be cared for as soon as possible, as 

 many forms soon badly decompose. With each package of 

 specimens should be placed a label, written with soft pencil 

 on stout paper, giving exact data of locality, depth, character 



