The New Orleans bulletin. [volume] (New Orleans [La.]) 1874-1876, 1875-10-10
SUPPL / N I n I.
NEW ORLEANS BULLETIN
NEW ORLEANS, OCTOBER 10, 1875.
SCIENTIFIC AND PRACTICAL INFOR-
MA ATOM

SCIENTIFIC AND PRACTICAL INfOh-
NATION.
BEES IN THE UNITED STATES The Cailfor-
MIA Agricult,Tist says: There are Two mliiion
bee hives in the United States Every hive
Yields. on an average, little over twenty-five
pounds of honey. The average price at which
honey is sold is twenty-five cents ponnd; 30
that, after paying their own board, the bees
present us with revenue Of So OOO,OOO. 10
reckon in another way, they make clear GIT
of over pound Of pure honey to every man.
woman and child in the vast domain OF the
limited States. Over twenty three and one
third million pounds OF wax are made and
given to us by these industrious workers.
The keeping Of bees is one OF the most pront-
able Investments that our people can make
Of their money. The profits arising on tne
sale of surplus honey average from nifty 10 TWO
hundred per cent on me capital invested.
CEMENT FOR TEETH recipe for new
kind of cement for plugging hollow teeth is
published by Ostermeier. as follows: parts
burnt lime and 16 parts glacial phosphoric
acid are mixed together and pressed into the
cavity, which has already been carefully
dried.
PHOTOGRAPHIC DIAGNOSIS DIR. Ultzmann,
teacher at the University OF vienna, lateiy
read paper before the Medical Society OF
Lower Austria, on the "U5e OF Photograpny
in Medical Studies" He mentioned, on the
authority of Dr. VogeL that an eruption OF
small pox had been made evident by photo
oraphy twenty.four hours before it actually
came out. Although no one could as yet OBJ
serve anything on the skin of the patient, the
Negative plate showed stains on the face
which perfectly resembled the variolous
exanthem. and twenty-four hours af.erward
the eruption bee ame clearly evident.
Tho largest rejecting telescope at the Paris
Observatory is completed, although 1T will
not be brought into use for two or three
months. The equilibrium of the tube is per-
feet, and it can be directed with the utmost
facility on any part of the heavens, although
it weighs about six tons.
comparative trial of the relative advan-
taoes of dynamite, gun cotton, and gunpow.
der was recently made at the railway tunnel
works under Clifton Down, England, with the
result of showing that dynamite is much
superior to either gun cotton or gunpowder
If the sick room is ventilated by q fire.
place. we should always open a window at the
TOD. II the room, on the contrary, Is heated
by register, window should always be
raised at the bottom, since the hot air rises to
the top of the room, creates plenum, and so
frees the air out at the bottom.
New OLEAGINoUs SEED.-The commits
French Colonies has lately called the atten-
ton of Marseilles soap makers to new
source Of oil, found in the seed OF the carapa,
which is tree Astounding in immense forests
in French Guiana Twice year the tree
produces an abundant harvest OF seeds,
which. at certain times, cover the earth to q
depth of four or five inches These, lnme'
diately subjected to pressure, give thirty-hve
per cent OF their weight in an excellent soap
making or Illuminating oil.
NATIONAL TREE Protection. U nited
States statute Of March 3, 1875, penalty Of
5000 or six months imprisonment is attached
to permitting cattle to run on national lands
and 70 break down trees and hedges. The
unlawful cutting or wanton destruction or in
iury Of any timber tree or any shade or orna
mental tree, or any other kind Of tree " on the
lands Of the United States is punishable by
$500 ine or years imprisonment
DIs1NFEcrANTs.-After an exhaustive series
of practical tests of the various disinfectants
sold in this city, embracing over fifty kinds,
Professor Edwin Waller, of Columbia College,
concludes that the best disinfectant Is carboit
acid. About one per cent. OF the mixture
should consis. of carbolic acid. For promp
disinfection which is only temporary, strong
oxydizing agents, as chlorine. potash perman
panate, nitric acid, ETC., should be used. u
chloride of lime.
A board of engineers is now in session IL
the city, examining Capt Eads' plan for the
Improvement of the mouth of the Mississippi
River. The recommendations thus far carry
the total length of the east jetty to 12,7O(
feet or 800 feet beyond the west jetty, anc
fix upon 1000 feet as the space to be left fol
the current between the two artifi cial walls.
To preserve ice water, make hat-shapeo
cover of two thicknesses of paper, with cot
! ton batting, half an inch thick, between
Place over the entire pitcher.
The French Government is considering {
project for constructing canal, by which the
VINEYARDS of the Rhone may be flooded as {
remedy for the phylloxera. The canal viii
cost twenty million dollars, but it will bring
into fruitfulness GO, 600 acres of vine lands
which will yield forty million dollars an
nually.
The BARNAcIFs ON THE GREAT EASTERN
Mr.. Henry Lee describes in Land and Wdte
recent examination of the bottom of tn
Great Eastern. made by him in search OF nev
barnacles and other marine animals. Hi
labors were unrew rded with much Of novelty
but among other interesting facts remarked
he notes that the portion OF the hull usual.
submerged was clad with an enormous multi
tude of mussels, extending over surface o
so, 900 square feet of iron plates, and in SOM
PARTS six inches thick. The average weigh
of the mussels was from IL TO 10 pounds pc
square foot, so that the vessel was cumbere
with fully 800 tons of living marine animals
enough to load, with full cargoes, two ordinar
collier brigs. -Scientyic american.
Teachers and their Responsibilities.
Teachers are persons on whom rests tn
blame or the praise Of the schools. and to Their
all power should belong. Ii a teacher Is nc
copsble of managing her own class, tn
remedy is not to set asuperior officer to man
age her, but to dismiss her and put oompe
tent teacher in her place. The relation Q
teachers to superintendent or committee Q
principal is not the relation OF rank and nj
to colonel or general or OF railroad employee
to president and directors. 1t is rather tina
Of q clergyman to the parish officers or OF
representative to his constituents, or OF al
editor to his subscribers.
The teacher is servant hired by the com