The Kenosha telegraph. [volume] (Kenosha, Wis.) 1860-1888, 1874-03-19
The PRESSURE OF SAP

OF s pm P,au,s," delivered before Tn. Ms,-
sachus It's State Beard OF Agriculture. u,
C"ionei VIM 3 CLARK President o, ITO
Massachusetts Agricultural College at AN.
herst. We have Just received copy ~
phmpn'et form, and on reading IL are no.
surprised Ut ne exirayagan, praise bestOw q
upon u ny toe late Professor Agassig, wht'
aa'd publicly al the time. This one pap. :
has amp y,repatd be State tor every do,iar
tnat has yet been expended ON the college. =
IL Is one OF tie most important: cvn,rlnu
I! ms 10 Sc'rnce, in That d.par, ment 10 VIII -
/ H. relates. ina' has been made in any ny, I.
Tue on'v regret that we have teif i'm realms
II s.lhat the author tad not befar.. it's put-
iicaton expen&e i it in % a volume. d,scn4>-
my the sualact more ~ length and Civ 4
sTlli more OF ,he wealth OF his sc.rn,tic
learning III COR n ciion WI b the re,nark.h e
results % ths expes,mente which have Bee
carried On uhder Ills diitctlOn. We tIun
that It is ons} h' begin my OF his c"nir.'.u-
ions o 'hr stock o. know edge his RE
ondne su: iac,. aa4sa
M r@r' o! the results vi Col Cialk,
IuvrN lgations Is more wonderful than ,ho
reiating TO he pressure OF he sap OF q Nv
ny tree or plant We make an extract RON
the pam ,'h'ei (shictl Is punished ny Wr'sh,
IL Poser, BosiOu.) and we are sue it wiz
excite III every scienIific ind $n earnest 10
read t he W ole pa per-
f.tr
trees III the amount OF sap winch they yic,d
! and The enormous pressure whlcb they ex,r
upon the gauge. Four Aleoies the black.
the yei'ow. ih- paper and ,he gray or wh, I.
birch wers tapped aud he dali5 dow OF sap
Weighed. They ereali tapped March l9th,
b, did bot breed tn tn Is b. from wa,ch
'line ihey flowed viii, regularly incress ng
AMOUNTS ~, they reached he msx,lnum o.
dle-n Tor zach sl,ects. Thus wss he lasl a.
April soon after winch he leaves began 10
expand aud the Il w To diminish.
TIE h"rn5eari did not w when tapped
! Apr 2INf, hn' on The tirtt OF May hied ahcu
te" pounds 1t nearly ias'e fess, ,urbid sap
he bird Of May. /, reached its maximum
OF TIVE We pounds and six ounces troy on
si'ou' aud a'owsy d. chued 10 amount after
this date
The wrd vine afforded from single spou,
e'gnt ounces ct nenry 'asiclrse, hm2Id sap,
Ma, 26in. which WAS be isrges1 amount Tor
any one day. aud bIed through the emit
m"ni b o. May a iew cunt es daily.
II only reIHHns 10 state in a few words
Some OF the surprising results obtained n,
the application OF metcura' gauges TO the
sugat maple. he black birch and The rape
vme. Observations WerU made on one or
more gauges seSrrii times daily and Occa-
ei"csdy every iour o the day and uIgnL,
from be first OF prlI 10 be 20 at Ju'y.
= gauge was attached 10 sugar maple
March 81 which Was three DAYS AFTER The
MAXIMUM Il ~ at sap Tor this spt ces. so
1uat iur' her observations are required cal lu
III tn. season t0conptete the record and de.
trrmnr wit GER Amy he MAXIMUM pres
sure Which it txhibi in sprtng. OF The
record made the inlios ING facts are Special
~ int restlng FIRST. the mercury AS sub
ject to constant and Singular osclii aIlons,
slanf ny usually In he mornlng, belt w 20
ro so bat there WAS indicated q 30 .eriul
suction shfo the tree, aud rs!Lg RI id'y VIII h
be Gun un n tae idrc- Indicated was sufH
Client to sustain cJiumn OF water many
ictGlc height. thus al 6 A. M, Apri, 2lst,
III re- was suction into Tue tree sufficient
To raise column OF water 25 95 ieot. Is
soon as the morning run sh"nc upon the |
Tree he mercury sndd' nj, began 10 RE.
80 hal al l5 A. M. ht pressure oulw ard !
VAS enough To sustain q column OF water
10 AZ feet IN height, q change r:prekent.
by more than a feet OF water On tbe morn. |
ing ut Aprii 32La the change was still great
er, requiring tor its representation Al ~ ieet
OF wafer. Three extraordinary fucl VA IONS
were not attended hy any pstua slate OF
the W. atner. and happened twelve days he
tor. there were any il dcations OF growth
to he detected IN tie buds. These obsrrvs-
tions are quite rev aud asyet wholly mex
piIcabie, but viii receive iUrh her attention
al Ii ful ure tirae.
Thc MAXIMUM pressure Of the sap Tor the
sc ason was observed @, 10 A M April IL b,
AND equal 20 sus alning coiuLn OF wa
ter 81 10 fest nigh. Til was an excellent
sap cay. considering the ;ateness or the seas
SON There was noticed general cores.
pondence between the flow OF sap IN Other
NAPLES aud The pressure On the gauge.
| After April 20 h. tue mercury remained
constant, below Zero day aud nlght. Durn
lng the month ei May. there was uniform
SUCTION equal to about eight tee: ot water,
and the unaccounts lie teature OF this tact
is that though apparently produc. d by ex
hallaiion from the expanding leaves, il re-