54 



genera Lycopodium and Selaginella, in which are found nearly the 

 whole of the species. He then pointed out the chief properties and 

 peculiarities of the species, particularly alluding to the inflammable 

 nature of the spores of Lycopodium davatum and L. Selago, and the 

 cathartic properties of these and other species, especially Lycopodium 

 ruhrum. 



March 8, 1867. — The President in opening the meeting briefly 

 alluded to the loss the Club had sustained by the death of Mr. 

 Thomas Martin, one of the Vice-Presidents of the Club, and who bad 

 filled that office since its establishment in 1857, highly respected by 

 all the members : his loss would be deeply felt by all who knew him. 



The following communication was read from Mr. Thomas Nickalls 

 to the President, with a letter he had received from Mr. H. J. Poulter, 

 of Dover, respecting the rainfall at Dover at two different elevations, 

 viz., in the town of Dover, 30 feet above the sea level, and at Dover 

 Castle, at an elevation of 512 feet above the sea. 



" Reigate, 14, 2, 67. 

 Sir, 



I have received the enclosed from my Dover correspondent : 

 the difference is very striking, the greatest being in 1st mo. and the 

 smallest in 10th mo. If the first was a very windy month, and the 

 last a very still one, I should be inclined to think whether that was 

 not the principal reason of the difference between the readings of the 

 two gauges ; the top of the Castle being so much exposed to high 

 winds, the rain would enter the gauge at a considerable angle. The 

 writer is esteemed a very accurate observer. 



Yours respectfully, 



Thomas Nickalls. 



Dover, 12, 2, 67. 

 To Mr. Thomas Nickalls. 

 Dear Friend, 



Annexed I send a statement of the rainfall for every month last 

 year. The difference between the two levels is striking, particularly 

 in some instances. The lower gauge is placed in our garden ; the 



