88 Companion to Botanical Magazine. 



Zealand, concluded by " those interesting discoveries which Richard 

 Cunningham made during his excursions on the northern island in 

 the portions of the years 1833-4/' (arranged and edited by Allan Cun- 

 ningham.) Thispaper commences with the discoveries of Sir J. Banks 

 and Solander, during the first voyage of Captain Cook, and brings 

 them down through the various voyages of discovery, including 



those of the Coquille and Astrolabe, to 1834. The number for 



March begins with a continuation of the last paper, which is 



still further to be continued. On the Sources and Composition 



of Gamboge, with an examination of some analogous concrete juices, 

 by R. Christison, M. D., Professor of Materia IMedica in the 

 University of Edinburgh, a worthy and important supplement to 

 Dr Graham's paper in the former number. Dr Christison has ana- 

 lysed the varieties of gamboge, including that sent from Ceylon by 

 Mrs Walker. The principal ingredients in all are resin and aribin, 

 in proportions not varying very greatly, and the conclusions arrived 

 at are, that the proportions of the essential ingredients vary in the 

 same species where the situation of the tree is different ; that the 

 gamboge tree of Ceylon may be made to yield a pigment as fine and 

 perfect as that of Siam, while in its medicinal qualities it also pos- 

 sesses properties in the fullest perfection ; and it is finally re- 

 commended that our Government, and the settlers at Ceylon, should 



use a little enterprise in the culture of this tree Illustrations of 



Indian Botany, principally of the southern parts of the Peninsula, 



by Dr Wright and G. A. W. Arnot, continued. A description of 



Spartina alternifolia of Loiseleur, a new British species, by Wil- 

 liam Arnold Broom field, M. D. concluded in the number for April. 

 There seems to be considerable confusion in the synonyms, and 

 also with some species which have been sent from America as the 

 true S. stricta. The banks of the river Itchen, near Southampton, 

 seem to be the great locality. " These Spartina swamps extend along 

 each side of the river, beginning just above the village of Itchen, to 

 within a iQW hundred yards of Norham Bridge, beyond which I have 



never met with either kind." Account of a botanical excursion 



into Brittany, by Joseph Wood, Esq. F. L. S Description of 



some new Cistaceae, chiefly found by Mr Drummond in the southern- 

 most regions of North America, by E. Spach ; not concluded. 



