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 Muller. 
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) 
Fic. 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 
