ICO 
Several years.ago a friend and | cap- 
tured several and placing them upon the 
thwarts of the boat watched their move- 
ments. After staring blankiy at us for 
some time, during which we frequentiy 
motioned as if to strike them,,one of them 
gravely climbed over the gunwale of the... 
turbed, 
boat and ‘‘splashed’’ into the water by 
the side. He was soon: followed by the 
rest but after once gaining the water, none 
of them swam more than three yards away 
BACILLARIA:. 
Fie, 4. Melosira. 
Fig. 1. Biddulphia. 
igwe2e Triceratium. 
Fig. 3. Coscinodiscus. 
Fig. 7. Bacillaria paradoxa, 
WRITTEN FOR THE NATURALIST: 
WHAT ARE BACILLARL# ? 
BY PROF, ARTHUR M. EDWARDS. M. D.- 
“ 
Answer to this question may interest the 
lover of natural history and may be of some 
importance to the worldly minded who learns 
that there is beauty and dollars in them. 
The Bacillariz are the Diatomacee of the 
microscopist. They are usually ranked as 
vegetables and form the “ infusorial animal- 
cules” of the older naturalists. They occur 
Fig. 5. Synedra, 
Fic. 6. Navicula. 
in motion. 
ALTE ORRGONGNAGIEU EN Eis le 
and not once again did they appear to 
recognize us and in no case did one attempt 
to fly from the’ boat. This habit of con- 
stantly ignoring the presence of man has 
gained for them the “dppropiate name of 
“Foolish Duck,’’ but so complete is their 
confidence that they are scarcly ever dis- 
and possibly they show good 
sense after all. 
(to be continued...) 
almost everywhere. In the fossi! condition 
Vast moun- 
tains, as the Coast Range in California ate made 
they are the tripoli of the shops. 
In the ‘‘electro silicon” and other 
They make up a 
large amount of rock in New Jersey and ‘south 
to Florida on the Atlantic coast. 
they form a large tract of country. 
up of them. 
fossil deposits they occur. 
In Spain 
In Peru, 
New Zealand, Japan and Denmark, they form 
acres on acres of a whitish rock which always 
has clay in it. At Essex and Boston, Mass. 
New Haven, Conn. New York and at Newark, 
New Jersey, they form the blue clay of the 
marshes and meadows. To see them we must 
have a microscope with an objective of yf of an 
