Has altered and added to HES’s list [compiled for Bibliographia zoologiæ et geologiæ, edited by Louis Agassiz and enlarged by HES, (1848–54)].

On zoological nomenclature CD cites a case in which he believes more harm than good would be done by following the rule of priority. Thinks the rule of the first describer’s name being attached in perpetuity to a species has been the greatest curse to natural history. Every genus of cirripedes has a half-dozen names and not one careful description.

Sends a paper he once wrote [missing] on the subject [of zoological nomenclature].

Has never seen the great nebula of Andromeda satisfactorily resolved; comments on this and gives some of his observations. Will be going to Brighton and then take his family to London for Easter.

JDH discusses Nepal wheat, wheat grown in Darjeeling, & in the mountains & valleys of Nepal. On tree roots JDH has found a parasitical Orobanche growth identical to one Georgie dug from ivy nut roots. Griffith's Phococordylis was growing on the same roots, for which refer to 'Linn. Trans.' [TRANSACTIONS OF THE LINNEAN SOCIETY LONDON Aug 1846] or 'Balanoph'. [ON THE INDIAN SPECIES OF BALANOPHORA]. JDH found many Bhotean inscriptions in Sikkim & brought away some of the best, he will teach a servant to take rubbings for his next trip there.