THE YOUNG SCIENTIST. 
121 
among the entomostraca and infusoria: 
Oyclops quadricornis, Canthocampus min- 
utus, sundry of the cypris tribe, Actino- 
phrys sol, Rotifer vulgaris and Anguilula 
fluviatalis, while among the algse Mr. Col- 
grove reports : Oedogonium mirable, Chaeto- 
phora elegans, fragments of nostoc, Closte- 
rium lunula, 0. acerosum, Cosmarium teter- 
opthalmum, 0. Botrytis, Euastrum verru- 
cosum, Staurastrum punctuatum, several 
jspecies of diatoms, and the volvox. 
Two, at least, of the party had never 
seen a live Volvox glohatorheioxe, and if not 
unduly enthusiastic at the sight of the little 
living globe rolling gracefully across the 
field of the microscope, did not restrain 
their exclamations when one gave birth, in 
a Osesarean style, to a family of eight, each 
of which, after a moment's rest, set their 
cilia in motion, slowly at first, afterwards 
more rapidly, and moved away on their 
voyage of life. 
Now the moral of this little tale is two- 
fold — First, do not remain in ignorance of 
the beautiful forms that fill with life the 
ponds and streams around us, for instruc- 
tion may be gleaned by the student, and 
entertainment by the dilettante from them; 
and, second, always take a collecting bottle 
when you go out walking. 
Rules for Using Glue. 
Glue, being an animal substance, it must be 
kej^t sweet; to do this it is necessary to keep it 
cool after it is once dissolved, and not in use. 
In all cases keep the glue-kettle clean and 
sweet, by cleansing it often. 
Good glue requires more water than poor, 
consequently you cannot dissolve six pounds 
of good glue in the same quantity of water you 
can six pounds of poor. The best glue will re- 
quire from one-half to more than double the 
water that is required with poor glue, which is 
<;lear and red, and the quality of which can be 
discovered by breaking a piece. If good, it 
will break hard and tough, and when broken 
will be irregular on the broken edge. If poor, 
it will break comparatively easy, leaving a 
smooth, straight edge. 
In dissolving glue, it is best to weigh the 
glue, and weigh or measure the water. If not 
done there is a liability of getting more glue 
than the water can properly dissolve. It is a 
good plan, when once the quantity of water 
that any sample of glue will take up has been 
ascertained, to put the glue and water together 
at least six hours before heat is applied, and if 
it is not soft enough then, let it remain longer 
in soak, for there is no danger of good glue re- 
maining in pure water, even for forty-eight 
hours. 
The advantage of frozen glue is that it can be 
made up at once, on account of its being so 
porous. Frozen glue of same grade is as strong 
as if dried. 
If glue is of first-rate quality, it can be used 
on most kinds of wood work very thin, and 
make the joint as strong as the original. White 
glue is only made white by bleaching. E. N. 
A Story of Science. 
BY ONE WHO KNOWS NOTHING ABOUT IT. 
A philosopher sat in bis easy chair, 
Looking as grave as Milton ; 
He wore a solemn and mystic air 
As he Canada balsam spilt on 
A strip of glass, as a slide to prepare 
For a mite taken out of his Stilton. 
He took his microscope out of his case, 
And settled the focus rightly : 
The light thrown back from the mirror's face 
Came glimmering upward brightly. 
He put the slide with the mite in place, 
And fixed on the cover tightly. 
He turned the instrument up and down, 
Till getting a proper sight, he 
Exclaimed — as he gazed with a puzzled frown— 
" Good gracious !" and " Highty-tighty ! 
The sight is enough to alarm the town— 
A mite is a monster mighty !" 
From t'other end of the tube, the mite 
Regarded our scientific, — 
To its naked eye, as you'll guess, the sight 
Of a man was most terrific, 
But reversing the microscope, made him quite 
The opposite of magnific. 
" One sees the truth through this tube so tall." 
Said the mite as it squinted through it, 
"Man is not so wondrously big after all, 
If the mite- world only knew it !" 
MORAL. 
Mem. — Whether a thing is large or small 
Depends on the way you view it ! 
Fun. 
I 
I 
