170 Prof. G. G. Stokes. Discussion of the Results [May 12, 



(3.) Another, better, method was used. Two frogs, whose brains 

 had been destroyed as before, were taken, and into the dorsal lym- 

 phatic sac of each a small drop of 5 per cent, strychnine was injected. 

 A minute afterwards only Ol cub. centim. of 10 per cent. (3 lutidine 

 was injected into one frog (A), the other (B) remaining as before. 



After fifteen minutes (A) gave no signs of strychnine tetanus, 

 while (B) gave distinct signs. After twenty minutes (A) gave only 

 very faint reflex action; but (B), on being touched, went into strong 

 tetanus. After thirty minutes (A) gave no signs of reflex action, 

 while (B) went into strong tetanic convulsions on simply touching the 

 table. 



These results lasted over an hour ; then into (B) 0"1 cub. centim. 

 of 10 per cent. (3 lutidine was injected, and in ten minutes the effect 

 of the strychnine began to pass off, and in thirty minutes was quite 

 gone, the frog not even giving signs of reflex action. 



Again, in some experiments strychnine was injected into one frog 

 (prepared as before), and strychnine with (8 lutidine into another. 

 After twenty-four hours the first went into strong tetanic convulsions 

 on touching, but never the latter ; that of the former disappearing 

 after the injection of the alkaloid. 



From our experiments we hope we have made it clear that /3 lutidine 

 causes a distinct increase in the tonicity of both cardiac and voluntary 

 muscular tissue, also a slowing in the rate of the heart's beat, and that 

 it arrests the inhibitory power of the vagus. That by its action upon 

 the nerve cells of the spinal cord, it, in the first place, lengthens the 

 time of reflex action, and then arrests that function ; finally, that it is 

 successfully antagonistic to strychnine in its action upon the spinal 

 cord. 



In conclusion, we feel much pleasure in acknowledging our grate- 

 ful thanks to Dr. Michael Foster, both for his kind help and happy 

 suggestions, which have been of great assistance to us in our investi- 

 gations. 



II. " Discussion of the Results of some Experiments with 

 TVhirled Anemometers." By Professor G. G. Stokes, Sec. 

 U.S. Received April 26, 1881. 



In the course of the year 1872, Mr. R. H. Scott, F.R.S., suggested 

 to the Meteorological Committee the desirability of carrying out a 

 series of experiments on anemometers of different patterns. This 

 suggestion was approved by the Committee, and in the course of same 

 year a grant was obtained by Mr. Scott from the Government Grant 

 administered by the Royal Society, for the purpose of defraying the 

 expenses of the investigation. The experiments were not, however, 



