ii 



ON THE VISCOSITY OB INTERNAL FKICTION 



numbers in the coefficients of m in Table IV. are therefore all too large, and 

 the value of p la also too large in the same proportion, and should be 



/i = -0000 1492 (461' 



The same error ran through all the absolute values in other parts of the 

 paper afl *ent in to the Royal Society, but to save trouble to the reader I 

 have corrected them where they occur. 



TABLE I. -Experiment 62. Arrangement 5. Dry air at pressure 0'55 inch. 



Temperature 68" F. May 9, 1865. 



The .observations were continued in the same way till five sets of readings 

 of this kind were obtained. The following were the results. 



TABLE II. 



Results of experiment 62. Mean time of ten vibrations = 362'G6 



Mean log. decrement . . . = O'l 588574. 



