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120.

After having made many ye like experiments I made many with pipes full of water;  I made a pipe of 50 foot whereof I have spoken above, and having soddered it in a cylindrick vessel of a foot stoped on all sides, we placed ye vessel upon 3 supports at ye ends.  Ye bases were plates of copper of a line thick and ye circumference was tinn, the upright pipe of 3 inches height was soddered in a hole made at ye middle of ye upper plate and ye cylindric surface of tinn was soddered with ye plate in this manner:

[[image:  Drawing of a rectangle representing a vessel with top plate A B adjacent to two supports D C.  There is a pipe F G entering the top plate at F G.  There is a dotted line E R S down the center of the vessel.  To the left of the dotted line is a shaded triangular shaped flap F R.\\

  A B represents ye diameter of ye plate ye small squares [[strikethrough]] of ye plate [[/strikethrough]] C and D ye thickness of a thread of iron wch run round ye Tinn wch made ye vessel near ye plate and served ye better to sodder it there, E F is a pipe of tinn of 50 foot heigh, ye lower plate was soddered after ye same manner with ye Tinn vessel as ye upper.  We filled with water ye vessel and ye pipe when it was at ye height ye plates were rendered convex by ye weight of ye water, and as they acted like a lever whose end was G, and ye conterlever ye largness of ye sodder upon ye end of the thread of iron, ye sodder was broken by that effort, ye parts nearest G being seperated first;  ye space unsoddered was 4 inches thrô which ye water ran, we soddered it anew and ye lowest plate was also unsoddered as in ye experiment, we made another vessel where ye Tinn being repressed in ye plates was stopped within and well soddered, we augmented ye streight pipe E F till it was 100 foot heigh, and it remained full of water a long without being broken, but at last one of ye sodders of ye vessel was opened at ye bottom from S to R, and was rent a cross from R to F:  ye plates were curved above an inch, but their sodder with ye Tinn was not broken, because acting like a lever as in ye first experiment even more strong because of ye great effort of ye water.  Ye soddered part of ye Tinn was elevated with it, and by that means was not unsoddered.  We kept that pipe a long time full to 80 and 90 foot;  but it did not break; and because ye water 90 foot;  but it did not break;  and because ye water of 100 feet acted upon that vessel of tinn as if it was a pipe of that height and of a foot large, as hath been proved in ye discource of ye equilibrium, we may hold for certain that a pipe of Tinn of 80 foot and of a foot large will not break being filled with water.

  I afterwards put a vessel of lead instead of that of Tinn its thickness was 2 1/2 lines of a foot large and 18 inches height but it swelled like a barril to ye incounter of ye flate plates of lead of 8 inches large and of ye same thickness of two lines 1/2;  ye sodder advanced 1/2 inch upon ye plates and upon that wch was riveted wch joyned ye [[strikethrough]] and upon that wch was were [[/strikethrough]] plates so they they were an inch large or more, they were above 8 lines heigh we filled ye pipe with water to 100 foot heigh, and ye two plates were bent round above 1 1/2 inch but nothing broke:  For ye sodder was elevated also along with ye rest, and ye lead was too thick.  It was of a porous lead wch had let some small streams of water pass, as I once saw ye experiment in a vessel of 1 1/2 foot and of 2 lines thick, althô ye upright pipe was but 15 foot:  Lastly to make an end of ye experiments I scraped with a knife and fited ye vessel about 6 inches heigh and 4 inches large, and when its thickness was reduced to a little less than a line in ye middle of that wch was filed then ye lead ye lead swelled in that place, and there was made a crack of 3 inches heigh thrô wch all ye water run out:  We may therefore for surely make use of a pipe of 100 foot 12 inches large, and of 2 lines thick, or else 1 1/2 line if ye lead be good.  See how we may explain ye resistance of ye vessel of Tinn;  we must consider it as a band of Tinn of a foot large wch must be broken by rending:  Now this band is 24 times as large as that of three lines wch supported 120 pounds, it ought therefore to support 445 times as much near and because ye water of ye pipe did weight 55000 pound:  For we must consider 

Transcription Notes:
mandc: Reviewed and amended image description and a few typos.