Notes . 
"184 
moderate-sized or large tree (60 ft. high in the Satpuras). Trunk 
erect, irregularly scooped out, fluted and compressed, attaining 5-6 ft. 
girth. Bark smooth, greenish white, no heart-wood. Structure most 
remarkable, entirely different from that of other Dalbergias. Broad 
concentric masses of wood alternate with narrow soft layers of a 
fibrous substance, so that planks cut off old trees often fall to pieces. 
‘ South and Central India. Gonda forests in Oudh. Silwalik tract 
west to the Jumna, ascending to 2,500 ft.’ 
As far as has been ascertained, no detailed observations have been 
carried out regarding the anomaly; and this being so, the writer was 
asked by Sir Dietrich Brandis to investigate the anatomy of the stem. 
The only material available for this was a dried portion of the trunk 
from a fair-sized tree. This piece measured 3 cm. in the radial 
direction, including the cortex, and exhibited two separate arcs of the 
anomalous structure, with a part of a third. The thicker of these two 
phloem-zones measured 1-2 mm. across, and the thinner -5-1 mm. 
Inasmuch as the raison d'etre of this note lies in the anomalous 
structure of the stem, it will be well to describe the anatomy of the 
narrow zones first. These rings, as has already been mentioned 
above, alternate with broad yellowish masses of xylem. By the 
examination of a transverse section, it may at once be seen that 
the narrow abnormal zones are of the nature of phloem, which is 
accompanied by a certain amount of cambium. This cambium is 
situated on the side nearer the centre of the stem, and abuts directly 
on the xylem-elements. Judging from the crushed appearance of the 
softer tissue nearer the periphery of the bast-rings, growth goes on 
to a fairly great extent, new elements being added by the activity 
of the cambium to the wood on the one side and the phloem on the 
other; thus a well-marked radial arrangement between these three 
tissues is seen. 
Immediately succeeding the cambium, sieve-tubes and phloem - 
parenchyma occur, and in the more peripheral regions a large amount 
of sclerenchyma is produced. The sieve-tubes are extremely well 
shown, having sieve-plates which, in the material examined, are 
much obliterated by callus. Obliteration was only observed in those 
elements nearer the cambium, the sieve-tubes in the more external 
regions of the zones not showing callus : hence they are somewhat 
difficult to make out. The diameter of the sieve-plates is, on the 
average, about -03 mm., it is thus seen that they are of more than 
