220 Rhodora [SEPTEMBER 
larly with the company’s agents in France, Germany, Spain, and Italy 
in their own languages. He was familiar with the best English lit- 
erature of all periods, an excellent mathematician, a lover of good 
music, and a good amateur player on the violin. He believed in 
thoroughness in all things and had a strong dislike to shams, whether 
in high or low position, but was always in sympathy with honest work. 
He was of a genial character in social relations, and made hosts of 
friends in every quarter. 
His interest in botany was lifelong, but it was only in the last fif- 
teen years of his life that he made systematic collections and notes, 
chiefly on algae. In the study of these plants he was indefatigable, 
and had explored every nook and corner of the coast near Bridgeport, 
as well as the fresh water streams and lakes for a considerable dis- 
tance inland. In preparing his specimens he had an eye for the 
aesthetic as well as the scientific value; it would be hard to find 
specimens of marine algae from any other collector at the same 
time so scientifically adequate and so beautiful as those that he 
made. He was one of the three founders of the Phycotheca Boreali- 
Americana, and many of the best contributions in this work are 
from him. He was intending to publish a list of the algae of Con- 
necticut, but though his notes and records seem amply sufficient, 
he delayed it from his desire for almost ideal accuracy and com- 
pleteness. — ZZydrocoleum Holdeni Tilden and Gomontia Holdeni 
Collins, the former a marine, the latter a fresh water alga, both 
discovered by him in Connecticut, commemorate his work. 
He was a member of the Phi Beta Kappa, and of the New Eng- 
land Botanical Club; and was for eight years president of the Bridge- 
port Scientific Society. In 1883 he spent six weeks in Florida ; 
though going there on account of his health, his time was spent 
mostly in studying the land and marine plants; in 1897 he visited 
Newfoundland, collecting many algae, some of which were distributed 
in the Phycotheca. A visit to Europe in 1900 was for business and 
social objects and not connected with botany. 
