Volume 18, Issue 5
November 1943, pages 83-131
pp 83-96 November 1943
Contributions to our knowledge of the pyloric cÆca in three families of fresh-water Indian Fishes (OphicephalidÆ, notopteridÆ and mastacembelidÆ), together with some remarks on their probable functions
pp 97-108 November 1943
pp 109-118 November 1943
Six additional cases of naturally occurring shoot-borne adventive roots on adult axes of herbaceous dicotyledons have been described in this paper.
These support the view of Priestley and Swingle that the site of initiation of a lateral root in adult hypocotyls and intemodes moves inwards from the pericycle to the flanks of the vascular cambium close to the newly differentiated xylem and phloem.
The radial growth of the hypocotyl ofCucurbita maxima is maintained by the independent growth of the vascular bundles, the interfascicular cambium helping the primary rays in keeping pace with the growth in thickness of the former.
pp 119-124 November 1943
pp 125-131 November 1943
The presence of rhyolites in the Panjal traps at Panthachuk was first brought to notice by late Prof. K. K. Mathur. The author studied the Panjal traps in some detail and as a result the acid rocks have been found to occur at two other places also,viz., at Cheshmashahi and Avantipur. These acid volcanic rocks are of the nature of rhyolites, trachytes and dacites and are very clearly different from basic volcanic rocks like andesites and basalts. These rocks are fairly abundant and must have played an important part in the Panjal volcanic activity.