22 Anniversary Address. 



the shoots of an old yew hedge were observed to be withered 

 at the points, sj3ecking the trees all over. Mr. Bosanquet 

 remarked that there were similar marks of blasting, dis- 

 figuring exotic pines at Rock ; whether owing to atmospheric 

 agency or the work of insects, is not at present known, but 

 is worth inquiring into. Near Blue Stone Ford there is a 

 section of stratified gravel and greywacke stones — mostly in 

 lines ; and coarse sand overtopped by a thick capping of clay. 

 Here two rounded boulders of the granitic porphyry of 

 Cockburnlaw were noticed, with unmistakeable evidences of 

 ancient transport. At Blue Stone ford lay many much 

 rounded boulders, one of them faintly striated, whether 

 structural or by ice action could not be determined, of the 

 basaltic trap of the country, to the west of Greenlaw. These 

 are relics of boulder clay now swept off, but may have 

 followed down an ancient track of the Blackadder. There 

 are no stepping-stones at the Blue Stone ford, but several 

 very slippery ledges of " blue whin," which in fording are to 

 be avoided, as many a traveller has been sent headlong into 

 the water from incautiously allowing his horse to get on to 

 these treacherous pavements. 



At Edington Mains, Mr. Wilson kindly invited the members 

 to luncheon ; and exhibited thereafter many querns picked 

 up on different parts of his farm. There were also a number 

 of boulders obtained in the process of draining, subsoiling, 

 &c, which included several pieces from Cockburnlaw of 

 pseudo-granites and porphyries ; and a particularly well 

 marked black metamorphosed Silurian slate, whose original 

 locality is on the banks of the Whitadder, about and below 

 the Retreat. This indurated slate was hollowed into curious 

 forms, as if the softer portions had long been subjected to 

 triturating agencies. Here again we find the existing river 

 combining in transporting debris, although the site is more 

 than a hundred feet above the level of the present stream. 

 Many roods of dikes have been built on the farm with 

 boulders alone. Bold, naked scaurs of Tuedian rise on the 



