i88a-i883.] 179 



in a carriage for instance), and the mode of propagation of the 

 stimulus from one part of the leaf or plant to another, were then 

 discussed. The recent researches of Walter Gardiner were 

 noticed, showing that the protoplasm of adjacent cells is actually 

 continuous by means of delicate filaments of protoplasm, passing 

 from one cell to another through the minute pits which exist in 

 the cell wall. The stimulus is, therefore, conducted directly, as 

 well as by a disturbance of the fluid equilibrium, throughout the 

 leaf or plant, which disturbance had been held before alone to 

 account for it. The paper was illustrated by diagrams of the 

 various positions assumed in consequence of movement by the 

 more important plants described as having these qualities. 



After this paper Mr. Joseph Wright, F.G.S., exhibited a 

 loraminifer {Pullenia quinquilobd)^ a form not hitherto recorded 

 as British. It was found in a dredging (45 fathoms), taken by 

 him in conjunction with Mr. F. P. Balkwill, about twenty 

 miles off Dublin. The same species has also been found by Mr. 

 H. B. Brady, F.R.S., of Newcastle-on-Tyne, in dredgings taken 

 at 90 fathoms and upwards off the West Coast of Ireland. The 

 election of a new member brought the meeting to a close. 



The fourth meeting of the Winter Session was held in the 

 Museum, on Tuesday evening, the i6th January — William H. 

 Patterson, Esq., M.R.I. A., vice-president, in the chair — when 

 a paper was read by Mr. Charles Elcock on the stone monu- 

 ments of Carrowmore, near Sligo, the site of the battle of 

 Northern Moytura. 



The practice of setting up stones as memorials was referred 

 to, as a common one in all ages, single stones or menhirs — 

 called in Ireland " standing stones " — probably being first used. 

 Instances are not very common of two stones — one upright and 

 the other flat on the top of the first — which structure is called 

 a talyot ; but a sketch of one in Minorca was shown. Tri- 

 lithons, or three-stone structures, of which Stonehenge pre- 

 sents some fine examples, were referred to. Reference was 



M 



