New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1870-05-06

o,ond orrocumulus, Cllrdled-cloud palo-cirrus the
sheetcloud; cumulus or stacRencoud, after the oia
Saxon name, is the Mount-cloud palno-cunuus- the
Rsin-cloud; fractocumulus, the Windcoud. Wheh tne
threads Of the cirrus waited upward In the SKY III
dicates rain when their direction is downward IL Is a
sign evaporation and fair weather In each case hey
popt toward the place of the electricity which evolved
at the time Steady high winds are also preceded ana
attended by streaks running across the SKY In the dec
ton In which they blow. The cirrostratus preeeoes
wind and rain and is the cloud which most frequently
exhibits the and lunar halo hence the prognosc
OF foul weather drawn from the appearance OF haos
The influence Of cirrocumuus on the lowering OF the
earhs temperature great that the human Dody fees
i at once. curdled sky at the new moon OF a calm
sight in the tropics is sky relatively glacial Tor those
ATTITUDES.
President Henry auded to Prof Poey at the close Of
this paper as one Of the meteoroogsts of the day.
and certainly the most indefatigable. While at
tached TO the French Commission in Mexico he made
upward of 10000 scientific observations, many OF which
were presented to the French Academy This paper on
Clouds the President considered of much value that
ne intended to publish it with the report OF the Smith
sonian Institution with full plates of illustrations. To
scientific and to farmers this Will prove of great
interest.
Prof. Pierce spoke few minutes the topics raised
by Gen Barnards paper the Influence of the Int
Structure Of the Earth Procession and Mutation"
TWAS in great deliberate hesitatng
ner OF the General when the Professor with his
strong frame, flowing hair and shrewd eye, 10
speak in his acute, ringing voice, like man TO whom
Titanic problems like daily exercise to an athlete.
He gives the impression of athletic mind, although
gifted with that gleeyed frankness which is apt TO
sound dominant and abrupt Such a mans spirited
voice makes mathematics seem alive.
Dr. Gould, who is leave for his observatory
in the Argentine Republic detailed his hope of scientific
Investigations there and spoke Of the advantages of the
young state La Plata Prof Pierce warmly hoped this
Inc "a as
France and to Germany and Switzerland by Agassiz and
Hasslor The failure Of the enterprise in La Plata
would be the failure of American Science Prof. Henry
offered Dr. Gould the waruest ympathies and hopes Of
success Comparison of barOmeters, by DR.. Craig was
the last paper ON the third day.
fourth day opened by Col. j. j. Woodward,
who spoke Of photographs by chemical light. He had
taken pictures by magnesium electric, and the Drum
moDd light, high 1000 diameters fine by sun
shine. Molers plate, OF different tones, had been taken
test object, and photographs exhibited which
gsgnifed it $500 diameters. Another specimen was
yart Of the interior OF vein stained with nitrate of
silver, enormously magnhed. Pictures Of soft tissues
could be taken well with Drummond or calcium a. with
electric light The Calcium light compared 10 the ground
glass which produces the white cloud Illumination
familiar TO microscopic photographers There is such
definition OF tumorS in medical photographs with the
ground glass without. The calcium light he found
perfectly steady and its power could be economical TO
the highest degree With the three lights spot three
feet distance from each, at the same time, with five
minutes exposure and condenser of light The dark
est effect obtained from the electric light the next
from the magnesium, next from the calcium The first
point gained in these experiments that OF shortening
the chemical spectrum Of the solar ray by the of
sphate of ammonia next that the part of the spectrum
OF chemical lights which has chemc power less than
The solar.
Prof Hfgarde next exhibited the Standards of Weights
and Measures prepared for Congress- by committee of
the Academy since 1890 These standards are furnished
by Com each State which il then To supply every
county with fac SMILES Thos weights and measures
are made the finest brass steel ncoSed with sacred
care IN cases OF polished walnut, velvetned and
fully guarded. The meter standard Of length was bar
of silver steel with al each end, in which plug
Of hardened steel is inserted and by this bar the fifty
thousandth part at inch DE determined so nice
are its divisions So careful is the adjustment that the
officer OF Weights and Measures has TO determine what
temperature Of steel has its standard length which
is xed at 7Oo This meter is accompanied by tracing
gauge and magnifers for marking nfnesimal divisions
The standard of weight is the kiogramme of brass.
Decimals are marked by weights of platinum WIRE and
there milOmeer too small 10 These gOrgcOusy
polished weights are lifted by siverplaed anchor and
pincers The liter Of capacity is composed Of
parts brass 70 u Of copper and Of platinum which
bination will bear handling better any made.
The capacity is determined by the amount Of water
these measures will contain, closing the vessel by
sheet ground glass Till the glass be showed i'll
longer without wettnG the edge OF the brass
presented II photographs OF me staI-clpstT
Presepe in Cancer, taken by Mr. RulheifQEa, IN April,
ls7. Mr. Rutherford said in reference 10 astronomical
photographs that the object adjusted at photo focus
must not be adjusted by the eye. He would discard the
wood tube and take metal, whose expansion be
recognized He chose thin tube Of iron the strongest
and cheapest and found he could use by that means
larger telescope, which he used with acronatc and
rectng lenses Prof Nicholson Of the Smithsonian read
long and careful account Of the great tornado Of 1860 in
Illinois Verify the Institution does not gather facts with
he ueW On 'h The speaker was sent Ia the west for
the purpose Of collecting facts about this storm about
weeks after Its occurrence This tornado IL may he
IeubeTd on the Th OF June swept for 600 miles
Iowa, Illinois, and Michigan, in @ narrow belt,
killing 10 persons, wounding $50, destroying
100000. When asked his theory as 20 the course
Oi the storm which curved considerably Professor
gave hs opinion that it dragged southeast and
northeast by the direction Of the water courses which i'm
Iowa flow toward the Mississippi and in Illinois tend
upward the lakes again President Henry considered
this valuable communication. Storms are more fire.
quent and violent m this than In other country and
Il was desirable that their phenomena should he more
fully known Their motive power in the first place
electric in the second was current Of air caused by
disturbed equilibrium III the upper or lower strata the
preceded by close day, with the dew point high
Shs electricity was not commensurate with the mechani
enc u Hhlbcd IN these CONNEXIONS Electricity il
not the cause but the consequence of such The
rays pierced the stratum Of moisture in the atmos
oausi.g great absOrptOn II becomes abnornaly
eaNu anu the slightest Is sufficient 10 throw 1t
Ia pertnroauol Mountains turn up the air and in
SicaSe the intensity OF the storms, which must be fed
with air sufcharged with vapor from below
Inc most interesting feature Of the last days proceed
iRss was graphic Lecture ON the Basalts Of Oregon,
Washington, ana idaho, by X. W. Raymond. After
Speaking OF the Dales themselves he said that Oh the
road rom Da!es CITY to Canon City, along the sante
iaver Wac tremendous thickness OF basaltic
throws 1900 feet high The rlver had taken it's way
through the chasm OF the original upheaya and Il
cetp~r. He explored the singular phenomena Of the
caves north Of the Daes. There no ice In Portland
iart Summer when he visited the place few miles
further IT WAS abundant; and inquiry he learned
mat was mined from the ice-cayes 40 miles up the
Samon River near thc foot OF Mt Adams An eIpedi |
iTi mid