. The Philosophical magazine; a journal of theoretical, experimental and applied physics. corrected by Hagenbach*,has the form. (2) Integrating between 0 and t, and between /j and /g, V = Fr^tmi,-I^) (3) Here /j is the original length (^ = 0), and /g the final length * Pcpg. A7in. cix. p. 358 (18C0). Tliis reference is incidental, or Ishould have to refer to Poisson, Na\ier, Stokes, Stefan, Ilelmlioltz, andothers. 340 Mr. C. Barus on the Change of the Order of Absolute of the thread of marine gUie. The eifect of the cyHnder ofviscous fluid in the reservoir a may be neglected from itslarge radi

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. The Philosophical magazine; a journal of theoretical, experimental and applied physics. corrected by Hagenbach*,has the form. (2) Integrating between 0 and t, and between /j and /g, V = Fr^tmi,-I^) (3) Here /j is the original length (^ = 0), and /g the final length * Pcpg. A7in. cix. p. 358 (18C0). Tliis reference is incidental, or Ishould have to refer to Poisson, Na\ier, Stokes, Stefan, Ilelmlioltz, andothers. 340 Mr. C. Barus on the Change of the Order of Absolute of the thread of marine gUie. The eifect of the cyHnder ofviscous fluid in the reservoir a may be neglected from itslarge radius. 5a. By way of digression I may add another similar case ;viz. that of a viscous liquid like glycerine, transpiring in avertical ca])illary tube, in virtue of the weight of its owncolunni only. In this case P=(L + /)8//, 8 being the densityof the liquid, g the acceleration of gravity, L the initial headof the cohunn. Inserting these quantities and integrating,equation (2_) becomes hqr^ 7}- 8(k-k + Lln^f An example of results obtained in this way is given in thefollowing Table. The observations, though made upon asing

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