REPORT ON THE CULTIVATION OF CHINCHONA IN BENGAL. 155 
passed upwards and outwards through the remaining structure to the 
leaves. Into this large central mould and the small radiating tubes the 
amorphous material was pressed, until it completely filled them. Sub- 
sequently the cylinder of elongated cells was converted into coal, form- 
ing a thin film, which surrounds and separates every cast of the cavity 
of the vascular bundle. The pressure to which the stem was subjected 
has compressed it, and also pressed the long processes against it. 
The upper portion of the specimen figured would be referred to 
Knorria longifolia, while the lower portions represent the appearance 
of the stems named K. imbricata. Professor Schimper has given an ex- 
tensive series of illustrations of these stems in his *Le Terrain de 
Transition des Vosges,’ plates xiii. to xx. He considers the subcortical 
‘cushions’ of the leaves to have been produced between the wood and 
the bark, but if the fossil belongs to Lepidodendree, where he, as I be- 
lieve, correctly places it, this is an uncertain locality. For if we con- 
sider the cellular structure external to the wood cylinder as cortex, then 
it is certain that there is a very much greater diameter in the stems of 
Knorria than is known to exist in any Lepidodendron. And if on the 
other hand the cortex refers to the external layer of thickened and in- 
durated cells, this was too thin a layer to permit the formation of such 
long processes. The interpretation supplied by the specimen figured 
explains the peculiarities of the fossil, and also shows that it can no 
more be retained as a separate genus than Sternbergia. 
EXPLANATION OF Pirate XCIII. 
of Knorria, from the Edinburgh Coal-measures, from the cabinet 
of Ghasies Te Esq., "Edinburgh. 
REPORT ON THE CULTIVATION OF ae IN 
BENGAL FOR THE YEAR 1867-6 
By Tuomas ANDERSON, M.D, 
Superintendent, Botanical Saee and in charge of Clisdione Cultivation 
engal. 
[Read before the Botanical Society of Edinburgh. ] 
The cultivation of the Chinchonas has been most successfully carried 
on during the year. The open-air cultivation has been greatly ex- 
tended, and now consists of four times the amount of plants reported 
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