1891. ] NEW YORK ACADEMY OF SCIENCES. ll 
Among his unfinished works, almost ready for publication, were :— 
A List of Star Fishes and Ophiurans collected in the Bahamas, 
—A List of Sea Anemones collected in the Bahamas with descrip- 
tions of two probable new species (illustrated), and The Anatomy 
of Hoya carnosa (illustrated). He was also at work on A Descrip- 
tion of the Fossil Plants of the Yellow Gravel of New Jersey, for 
publication by the U. S. Geological Survey, for which all the illus- 
trations had been made. The general subject of the Yellow Gravel 
was one in which he was particularly interested, and in regard to 
which he had collected many notes. He also bad in contemplation 
a work upon the islands of New Providence and Andros, embody- 
ing all the lists of collections and the various notes made there by 
him duri ing the early part of the vear 1890. The amount and 
variety of ‘material collected during this trip (from Jan. 2d to July 
10th) was remarkable, and it has always excited my admiration 
and wonder. Mineralogy, geology, botany, and zoology are all 
represented, and the specimens are carefully labelled or tagged for 
reference or for future study. One of the birds collected proved to 
be new to science, and was described and figured by Prof. J. A. Allen 
in the Auk, vol. viii, Jan. 1891, under the name of Jcterus Northropi. 
The two new sea anemones, previously mentioned, and several un- 
described plants are also to be included amongst the specimens 
collected during this trip, and finally it may not, “perhaps, be amiss 
to call attention to the word “ rhizomorph, » eoined by Dr. Northrop 
as descriptive of the peculiar cylindrical concretions ‘formed around 
the roots of plants. The word is a singularly happy one, and bids 
fair to become a permanent addition to ‘scientific ter minology. 
Dr. Northrop was married June 28, 1889, to Alice Bell ‘Rich, 
companion, the value of whose assistance in all his works he never 
failed to recognize and proclaim—one whom I trust will carry to 
completion much of the work which he left unfinished behind him. 
Dr. Northrop’s excessive modesty gave him an appearance of re- 
ticence and reserve which was not always understood by those who 
did not know him intimately. He seemed to appreciate this, and 
used to think that he never made a good impression on any one, 
because he felt that he was not a ood. talker. To those who knew 
him best, however, this apparent reserve was merely one of the 
evidences of his retiring disposition, which showed itself in the in- 
difference with which he regarded the discovery and descriptions of 
new species as compared with the study of their structure and life 
history. He was an enthusiastic and indomitable collector and 
careful observer, sparing neither time nor trouble to complete or 
render correct whatever he undertook. He actually seriously pro- 
posed to return to the Bahamas again for the sole purpose of making 
certain in regard to the exact color of the disc of one of the new 
sea anemones, that he proposed to have lithographed. Unlike some 
collectors, however, he could never quite smother his sense of 
humanity by his enthusiasm as a naturalist, as an instance which 
