New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1866-09-27
APPLIED SCIENCE.

1he POlVLeChnic DIdncn OF Lit RIIcilCdh liot4tu'V
held It's first annual meeting on Thursday evening
last Il Room "a Cooper bnding The hairman Prof 5 D.
TuAs IN bis opening address devoted hafhour oareview
Of1c proceed ngs Of the American Association for the advance
ae1toi S.s,cs 10 Aurustst which very fully and ably
teyofsd IN ING y. y TRIBUNE He warmly appreciated the
papers q KrKwOOp COFrN. HUNT HIYAEp LOOMS
,, ~ .'Tlecfrlo CSrTsn bS5 ep1ed tie Calculus Of
Qnartenions invented by the lale Sir WILLIAM hoWAN HAN
TON first psbsbed IN 1888 Anusion was made TO 'e
increasing attention paid 20 Science IN our Coests au
this connection description was gwen OF ,e'e'
Of the microscope By President BAENAp oil Coumoa
College. -.-...,...- a.. .,.r,.
nation VI new inventions aud discoveries
NEW EAETH-PULvER1zER.
This machine the invention Of Messrs. FnHlAs YoUNG
VIVA exhibited ia model 1t consists Of series Of rotary cut
sers 80 shaped aud combined act On the soil in nearly
uniform manner willie tho whole machine has forward
moyement Motion m communicated 70 the cutters by large
wheel having Oh It's periphery donDe row o. slas OIs
ye oboso e9el9 at he points o. contract 'IT eI 6o @
condition The whole Is mounted four wheels which ere
brought into only when It being moved to aud IRON tue
As this is a new attempt to question ofthe greatest
sepStbe machine Was nb etcd 10 c closest scrutiny Of
several mechaniciaBs present. Its construction war au
BY repeated tests Feds Of he same dimensions and
pared for the same Kind Of seed by tie o% ana narrow G
by this machine would By their yled SHOW p'os'i! Do
advantages secured by lie new plan. ,,
digecrs now IN successful operation.
Mr. u. SIEyESs said il had been found profitable 70 plow
before p1ntigi the was
admitted to be most efficient IN prepafE iAe SOL az lar
pn,eIzing and aeraug the sol was conc rned 1t etheuto
Of ne oS modes Kacr some queries by H. f. WALNe had
beeu answered the secretary Mr. T. D. STIsoN look we
machine concluded by urgns its manufacturers to maze
early aud repeated trials OF 1t 10 oaer 10 pc aoS 70 so
definitely how much benefit tie farmer 10 derive o 'H0
this mode Of culture
NEW VALVE FOR STEAM ENGINES.
Dr. WARREN RowEL remarked he had years since in
vented perfectly balanced rotary valve which now pub
die property He had lately changed the form valve so as
10 adapt 10 the loc motive The model e1nod
viii show it arranse a the pressure Of Steam Is evenly
DISTRIBUTED npo3 eye{ ts thereby oyIGo@!qs ae serious
NEW MODE OF COMMUNICATING TOWER
Dr. RowELL cso exhibited models Of plans for transmit
ing power distant poias The first be conrved daring The
Sumner vacation aud had presented the phc through Tie
SeieS6 Americon and he otoed the London Mechanics Maga
sns bad copied the drawing description Of it, giving him
due credit He wished 10 say that sGhs11nay the same
thing is found on all locomotives where tuT driving aces
are used in this double cranss az night angles are
connected by rods hut being on opposite SIDES 81 uG naeh
this relation Is rot noticed nc haa now another piI Wuc
he clsimed was rely original The model exhibited shows
three lOds forming t'h-Iei ~ tdvi "lsc t"o p
crank No motion Is communicated dec 20 crank No 3, anc
at the time, ROUNDABOUT way thiCuga crank n"
ana thus II VIII De seen pressure = I" ouF ~ 49, % -
No FROM two directions Cd The same me- thus oOvlathE VIC
dead points which W.cr power HIIhoa 10 crank
right line The description Of this novelty was received
The ,syiy elrS+d So much ingenuity has heretofore
been expended in gearing and motor connections that we
seldom meet with anything new The last ngenilon OF d.
Towe!l deserves oOumcndat!0n The FIST was only
modification OF that found in the boOss Tor az will be seen by
illustration on the black board by hayh three eTahA on
eranks distance by merely cOEn'oag tie hbo parts By
rope OF wire because tie power be constantly conuuH
Gated By drawing AID Not by pushing as VIII be necessary
whore oug two connections are made
Mr. T. d. STEsoN said this experiment was made on large
scale Niagara where communicated by means
of foar cran to other four crnk at distance Of 80 feet
1t was fond however hat the sag AMI sUrca o. ue VIZ
ropes t instance being Of pded and coy
trscd by changes OF temperature great that the a
paTaius proved aiaue distances such CONNECTIONS
may be efficient ~ - ~,
oil regions HI knew instance where steam engine Of
of timbeF producing recrIscating hat uc.roary
not less than mile and hag long. lie Promised to
present before the Association, al future meeting drawing
Of that novel arrangement
VENTILATION
This subject selected for discussion first taken up b.
Dr. RoWELL who avesred that s drs through doors win
dows venGors anG cimney Depended on tie different de-
eees o. Tere!acuon # the GiF. TIE highest ar ascenGs be-
cause displaced by cir Of rreer density The whole
action is therefore. tie resnt t -raNa'on IL oaer 10
rsus which could be copied by young xPcmencIs in Natural
Philosophy. 1t consists Of glass heakei when - 10 be partly
filed with waters q SIS iuc wiki funnel a. is top inserted
in the benker nearly the bottom vial containing few
shot 10 make ITS specific gravity nc sgme Is ths Of fresh
floats bhessh Of tho Nov BY ressin;
smaller while Us weight rrman9 The same, yet its relation 90
SopSs 81 vste nG tScferS il must ssk to the bottom
Of the beaker. Water saturated with salt Is row poured
enc gravity than the fresh water ard he lille val
II finds the lowest level beakcr dspccing fresh
and tie sine raising the vial 80 ch floats
midway IN the becker and the no between tie salt and
fresh water THIS itlo experiment illustrates the action Of
balloon which does e but is prsacd up ~ tic
heavier dir which is constantly dpaCng IT, The difference
In Temperature affecting density being then tho Of al
motions Of The air. he had been inclined TO Believe had more
with the OF breathing than geucTay
posed Daring u late heated he had observed Lany
sicky children o. in the nurses lTeathei with great
difficulty He thought when tie difference between the ten
peratue ofthe air ID that ofhe lungs Yves greater DauTe
assisted the weak child in the process Of Breathing
Dr. l. Brady did not accept THIS doctrine. The action OF TIC
lungs belong the cisss % involuntary motions. but TIC
strength tic lungs lOTce generated in the bOGy
by means Of TODD
Dr.. j. b. RlCH said there was something IN the position
taken by Dr. ROwe the involuntary action OF the lungs did
not DO the whole work the cOnesss OF the inhaled air and
the warmth OF the eXnHed air materially ELECTED tie action OF
breathing. III process required time. He had found when
be had charge Of toe physical training Of many persons THAI
with the aid the voluntary muscles the Of breathing
could not be carried with great rSdy os any length u
time
The CHATHAM said with regard ventilation much that
a. important remains untold Tie law Of the diffusion of
ID Lgher law than that Of gfavaion IN instances
Ths matter had been generally overlooked ~ inventors OF
Veutators He intended 90 this subject 81 the
meeting Frequent lusOns having been made 70 tic
dra Of chmncys he proposed 70 Illustrate tho black board
TIE composition Of the entered the furnace and The
relative quantity o. oxygen and nitrogen contained together
with the volume AMI composition Of the products Of c0mbu
ton The element nitrogen takes part In the pro-
Of cOmbuson a. however becomes highly heated, and
thus raeed cad mixed with cerbonc acid aud sometimes
carbouc oXyd assists In bearing rapidly away gases
resulting from the process OF burning.
Several other gentlemen participated in the debate which Is
10 be the meeting Thursday evening Sept g.
add to that tine the Association adjourned.
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CARD FROM MR. LANPHIER
10 tie Editor Of The ~ Y. Tribune.