From the facts it appeared probable that the tea and cof- 

 fee grown at Kew would not contain it ; that, however, was 

 found not to be the case. Its presence could be easily- 

 detected in the leaves of Tea viridis and Co fee arabica. 



Through the kindness of Professor Dyer, I have since 

 obtained two genuine samples of Kat, coming directly from 

 Aden, one being labelled " Kat Sabari," so called as coming 

 from Sabar, a mountain range in Yemen, and the other 

 " Kat Mactari Ashab," as it has long (ashab) leaves. I have 

 examined both carefully, without finding a trace of caffeine 

 or an alkaloid being related to it. It requires therefore further 

 researches in order to discover the active principle of Catha, 



Dr. Schuster, F.RS., gave an account of Meteoric dust, 

 and exhibited some specimens found in Himalayan Snow. 



" On the Duality of Physical Forces," by James Rhodes, 

 M.RC.S. 



There are two Primary Forces in the Universe : 



1st. Gravitative. Mechanical or weight producing force 

 causing condensation of matter. 



2nd. Expansive force causes expansion of matter. 



Thus, these forms of motion are distinct and opposite in 

 character in their actions on matter, the one to the other. 



The consideration of the above question does not affect 

 the truth of Drs. Meyer and Joule's theory of the 

 mechanical equivalent of heat, but will show that the 

 Mechanical Gravitative, or Weisrht Force, is not converted 

 into heat, but that owing to the condensation of matter, 

 effected by 772 foot lbs. of this force, a given quantity of 

 expansive force is emitted as 1 degree of heat. 



That a body, apparently at rest, still continues to act by 

 its weight, pressure, and condensation to eliminate heat from 

 matters towards the earth's centre. And also the action of 

 gravitative force acting on the sun's photosphere causes the 

 emission of light and transmission through space. 



