168 Capt. R. C. Tytler on the Fauna of Dacca, 



orders is uot of that great importance with which it seems to be 

 generally regarded. The leaves are truly verticillate in a certain 

 portion of the Cinchonaceoi, and, without any violence to truth, 

 they may be regarded as verticillate in the whole of these plants, 

 in this way. All botanists will admit that stipules are merely 

 reduced or rudimentary, partially-developed leaves. In Galiaceee 

 we have plants with leaves in whorls, all equally developed, but 

 in many cases with an undoubted tendency to reduction in part 

 of the whorl. In Cinchonacece a certain number of the leaves of 

 the whorl are invariably much more fully developed than the 

 others, which assume the character of stipules, but do not ap- 

 pear in the form of ordinary stipules, as appendages to other 

 leaves, but occupy independent positions around the stem like 

 true leaves. If the argument had proceeded in this direction, 

 we should probably have had less discussion upon a point which 

 still remains to be satisfactorily cleared up*. 



EXPLANATION OF PLATE IX. 



Pig. 1. Stipular gland of Cinchona Calisaya. 70 diameters. 



Fig. 2. Stipular gland of Ixora coccinea. 70 diameters. 



Mg. 3i Vertical section of gland of Cinchona Calisaya (after Weddell), 

 showing (a) central nucleus of compact tissue, and (b) outer layer 

 of elongated cells. 



Fig. 4. Diagramatic view of two of the cells of the outer layer of the gland 

 (C. Calisaya), exhibiting the canals {c, c) at their apex, as shown 

 by Weddell. 



Fig. 5. Stipular gland of Bxostemma longijlora. 70 diameters. 



Fig. 6. Twin gland from stipule of Luculia Pinceana, formed by the adhe- 

 sion of two glands throughout the greater part of their length. 

 This is only of occasional (accidental) occurrence, the usual form 

 of the gland being not unlike that of Exostemma longijlora, but 

 of greater size. 70 diameters. 



Fig. 7- G\ainds of Galium saxatile. 70 diameters. 



Fig. 8. Gland of Crucianella stylosa. 70 diameters. 



Fig. 9. Glands of Galium cruciatum. 70 diameters. 



Fig. 10. Gland of Galium urceolatum. 70 diameters. 



Fig. 11. Gland of Asperula odorata. 70 diameters. 



XVIII. — Miscellaneous Notes on the Fauna of Dacca, including 

 remarks made on the line of march from Bairackpore to that 

 Station. By Capt. Robert C. Tytler, of the 38th Regiment 

 Bengal Native Light Infantry. 



I HAVE already, in page 365, Ser. 2. vol. xiii. of this work, given 

 my observations on the fauna of Barrackpore ; I shall now add 



* To Professor Balfour, Mr. M'Nab, and Mr. Evans, my best thanks are 

 due, for the unlimited use of plants from the Royal Botanic and Experi- 

 mental Gai'dens, for examination. 



