LEWIS 1J. VON SCHWEINITZ. 
17 
tions which it might, from subsequent discoveries of his 
own, seem to demand. Finding, on his return, that his 
editor had made important additions to the number of 
species, the honourable mind of Mr. Schweinitz led him 
to request that it should appear as their joint produc¬ 
tion, remarking that “the judicious and elaborate amend¬ 
ments he has proposed, and the mass of new and valu¬ 
able matter he has added, entitle Dr. Torrey to a parti¬ 
cipation in the authorship of the work.” This incident 
is mentioned only as indicative of the feelings and dis¬ 
positions of the man. 
The voyage this year undertaken, was with a purpose 
similar to that of 1818, and on both occasions he exer¬ 
cised on the deliberations of his brethren at Herrnhut a 
decided and salutary influence. 
During his absence from the country his paper on the 
new American species of Spherise, one of the largest 
genera of the Fungus tribe, was communicated to this 
Academy, and appeared in the fifth volume of the Jour¬ 
nal. 
On his return, near the close of the year, his pursuits, 
except the superintendence of the literary institution, 
which he had previously relinquished, were resumed, 
with his wonted alacrity. The great work to which he 
now devoted his leisure was the Synopsis of North 
American Fungi, which was originally designed for 
publication in some of the European journals, but which 
he was induced to .present, in 1831, for insertion among 
the collections of the Philosophical Society of this city. 
Until the year 1830, the health of Mr. Schweinitz 
