442 TRANSACTIONS AND PROCEEDINGS OF [Sess. lvi. 



and p. media form another. In the first group the cotyledons 

 are linear, in the second oval. There are various minor 

 differences between the seedlings in each of the two groups 

 as regards length of hypocotyl, of cotyledon hairiness, and 

 so forth; but one remarkable point in the habit of the 

 members of the first group is that the tip of the cotyledons, 

 especially in the species in which the cotyledon is long, e.g., 

 P. arenarici, curl downwards, and may clasp an adjacent object, 

 thus performing the function of a support to the seedling. 

 The curling may continue to so great an extent that the tip 

 completely surrounds the object with which it is in contact. 

 P. lanccolata has cotyledons as long as those of P. arcnaria, 

 but not curling to such an extent. The cotyledons in P. 

 maritima are shorter, but curl as much as those in P. 

 lanceolata. P. Coronojms has cotyledons shorter than those of 

 the other three in the group, and they do not curl so much. 



The following paper was read : — 



Note of Experiments in the Dean Fokest, Gloucester- 

 shire, TO show the effect UPON THE GROWTH OF OaK TrEES 



— (1) OF Transplanting them, and (2) of lifting them and 

 Eeplacing them in the same Holes. By Lieut.-Colonel 

 Bailey, E.E. 



The facts submitted to the meeting were given to me by 

 Sir James Campbell, Bart., by whom the experiments have 

 been carried- out for the past 38 years. The first of them 

 was undertaken by one of his predecessors in 1784, and the 

 second was begun by himself in 1861. 



The former was intended to show the effect upon the 

 growth of oak-trees, of " (a) transplanting them at a tolerably 

 early age ; (h) treating them in this way at a more 

 advanced period ; and (c) leaving them in the original seed- 

 bed or nursery." In pursuance of this object, a number of 

 young trees, 16 years old, were transplanted in the year 

 1800 ; and a number of others, then 25 years old, were 

 transplanted in 1807. Girth-measurements of these, and of 

 certain other marked trees left standing in the nursery, 

 were commenced in 1809, and have been continued every 



