98 
THE YOUNG SCIENTIST. 
as it is usually seen in the live-box or hol- 
lowed slip— swimming about flat. Very 
often, however, especially when swim- 
ming amongst the slender stems of algae, 
Fig. 1.— NOTEUS, FRONT YIEW. 
etc., it turns up on edge and presents the 
appearance shown in Fig. 2. In this posi- 
tion the young and inexperienced micro- 
scopist would hardly recognize it as the 
same animal. This is, however, a fre- 
quent circumstance in regard to micro- 
scopic objects. Very many diatoms and 
Fig. 2,— NOTEUS, SIDE YIEW. 
desmids present such an entirely different 
appearance when seen in front view and 
in side view, that unless the microscopist 
has had considerable exi^erience, or has 
actually seen the objects rolling over so 
as to present both views, he will be unable 
to recognize them. 
The Noteus is sufficiently transparent 
to disclose the working of its internal 
organs under the microscope. If a little 
carmine be added to the water the work- 
ing of the cilia is beautifully seen. The 
best way to use the carmine is to grind a 
little of the best water color upon a slab 
or a very smooth plate, and add a small 
quantity to the water by means of a camel- 
hair pencil. The carmine ordinarily sold 
in powder is too coarse. 
Astronomy for Amateurs. 
BY BEKLIN H. WEIGHT. 
(Calculated for the Latitude of New York City.) 
THE PLANETS— SEPTEMBER, 1880. 
D. 
H. 
M. 
Mercury invisible. 
Venus sets 
30 
6 
33 evening 
Mars invisible. 
Jupiter rises 
10 
7 
26 
" in meridian 
10 
1 
49 morning 
" rises 
25 
6 
24 evening 
" in meridian 
25 
0 
44 morning 
Saturn rises 
10 
7 
57 evening 
" in meridian 
10 
2 
30 morning 
" rises 
25 
6 
55 evening 
" in meridian 
25 
1 
27 morning 
Uranus invisible. 
Neptune in meridian 
20 
2 
50 
NEAE APPEOACH OF MOON TO PLANETS AND 
STAES, AND OTHEE PHENOMENA, SEPT., 1880. 
Sept. 1. Uranus conjunction with Sun. 
" 3. Moon near and South of Kegulus. 
5. Venus 7° North of Moon. 
5. Mars 6° North of Moon. 
7. Venus i° North of Mars. 
" 7. Moon near and South of Spica Virginis 
" 10. Moon a few degrees North of Antares. 
" 11. Moon lowest. 
" 12. Moon a few degrees North of Milk- 
maid's Dipper. 
" 13. Moon Perigee ; tide highest. 
" 17. Mercury superior conj. with Sun. 
" 20. Jupiter 7° South of Moon. 
" 21. Saturn 7f South of Moon. 
" 21. Neptune 6° South of Moon. 
" 22. Sun enters sign Libra (constellation 
Virgo) and Autumn begins. 
" 24. Moon highest. 
" 25. Jupiter in Perihelion. 
" 25. Moon Apogee ; tide lowest. 
EPHEMEEIDES OF THE PEINCIPAL STAES AND 
CLIJSTEES FOE SEPTEMBEE 20, 1880. 
H. M. 
Alpha Andromeda (Alpheratz) in 
meridian 0 4 morn 
