Proceedings of the Royal Society of Edinburgti. 377 



and not being at all emulsive. That of the Garcinia cambogia also 

 differs in not being at all purgative, at least in doses three or four 

 times as great as the customary doses of gamboge ; and its colour- 

 ing resin possesses only a tenth part of the intensity of the colour 

 of true gamboge resin. Farther, both the concrete juices in ques- 

 tion differ essentially from gamboge in composition, in so far as both 

 contain proportionally less gum, and one of them contains some vo- 

 latile oil. Their composition was found to be as follows : 



Hesin . . . .66.0 765 



Arabin . . . .14.0 17-G 



Volatile oil . . . 12.0 0.0 



Accidental fibre . . 5.0 5.9 



Loss, probably volatile oil, 3.0 0.0 



100.0 100.0 



The author farther announced that Dr Graham had been lately 

 enabled to determine, with the assistance of Dr Brown, certain 

 points which he had left undecided in his paper of the previous ses- 

 sion, on the botanical source of true Ceylon gamboge. It now ap- 

 pears, that the specimen from which Murray of Gottingen esta- 

 blished his Stalagmitis gambogioides, and which is still preserved in 

 the Banksian Herbarium, is in reality a patched one, consisting, 

 probably, of the Xanthochymus ovalifolius and of the true plant. 

 Dr Graham has therefore felt no hesitation in attaching to Mrs 

 Colonel Walker's specimens a new generic name, derived from the 

 dehiscence of the anthers, namely,. Hebradendron. He has retained 

 the old specific name Gambogioides ; and he has been enabled to 

 add to the new genus a second species, H. ellipticum, found by Dr 

 Wallich in Sylhet, and supposed by that botanist to be a Garcinia. 



3. Farther account of indications of Changes in the relative 

 Levels of the Sea and Land. By James Smith, Esq. of 

 Jordanhill. 



The new localities in which the author has found alluvial depo- 

 sits containing marine remains, occur on both sides of the river 

 Clyde, in Loch Ryan, in the island of Skye, and on the east and 

 weet coast of Ireland. Near Glasgow, and in the county of Lime- 

 rick, sea- shells were found about 80 feet above the level of high 

 water. In the vicinity of Dublin the marine deposit was upwards 

 of 200 feet above the sea. Mr Smith considers that indications of 

 this change of level will be found on every part of the coasts of the 

 British islands. The deposit belongs to the newer pliocene of 

 Lyell. The shells, of which about seventy different species have 

 been collected, agree in general with those now existing in the 



