22 



Prof. J. 0. Adams. On the 



[Jan. 13, 



phonus B stung in same manner with same results." Again, " Cock- 

 roach stung between abdominal terga." " Cricket stung in third leg, 

 that leg became paralysed ; leg removed with scissors, and the animal 

 became quite active." " Gryllotalpa stung in one thigh, leg paralysed 

 at once ; stung in opposite thigh, same result. Other legs moving, 

 turns over when placed on his back and crawls about. Stung nosv 

 in thorax (dorsally), quite paralysed ; moves jaws, but will not turn 

 over." 



I have made experiments with simple puncture for control — that is 

 without introduction of scorpion poison. Using large insects for 

 these experiments I obtained complete freedom from ill-effects when 

 using simple puncture, whilst the same species of insects when 

 punctured with introduction of scorpion poison were instantly para- 

 lysed and died in half an hour. 



I also procured two small shore crabs. One I punctured between 

 two joints of the great chela of one side ; several drops of blood 

 exuded, but they coagulated, and the crab remained well. The second 

 I stung in the same place with scorpion's sting, squeezing it to ensure 

 poisoning. The claw was immediately paralysed, and the crab 

 gradually became torpid, and died in less than an hour. 



III. " Supplementary Note on the Values of the Napierian 

 Logarithms of 2, 3, 5, 7, and 10, and of the Modulus of 

 Common Logarithms." By Professor J. C. Adams, M.A., 

 F.R.S., Loundsean Professor of Astronomy and Geometry 

 in the University of Cambridge. Received December 30, 

 1886. 



In vol. 27 of the 'Proceedings of the Royal Society,' pp. 88 — 94, I 

 have given the values of the logarithms referred to, and of the 

 Modulus, all carried to 260 places of decimals. 



These logarithms were derived from the five quantities a, b, c, c/, e, 

 which were calculated independently, where 



, 10 7 , 25 , 81 , , 50 , ,126 



a = loo- — b = log- — c = log — , a = log—, and e — log , 



° 9 24 80 6 49 ° 125 



and a complete test of the accuracy of these latter calculations is 

 afforded by the equation of condition 



a — 26 + e ==: d + 2e t 



In the actual case the values found for a, b, c, d, e satisfied this 

 equation to 263 places of decimals. 



Although this proved that the values of the logarithms found in the 

 above paper had been determined with a greater degree of accuracy 



