-3- 
Bay (Sec. 16, T. 51 H» H 42 W«). This was found to be the 
most convenient location for the examination of the shore 
line and the hemlock forest of the north slope. Later, head¬ 
quarters were located on the site of an old mining property 
near Carp Lake. All the work in connection with Carp River 
valley and the summit of the range was done from this point. 
I wish to express my appreciation of the encourage¬ 
ment and co-operation of Dr. H. C. Cowles of the University 
of Chicago, under whose direction the work was undertaken. 
I also wish to thank Dr. Geo. D. Puller of the same institution 
for suggestions in regard to the method of work. To the follow 
ing gentlemen, I desire likewise to extend my thanks. Dr. A. J. 
Grout of New Brighton, II. Y. , for the determination of about 
45 species of moss. Dr. Bruce Pink of Miami University, Ohio, 
for the determination of about 60 species of lichens, and Dr. 
E. A. Bessey of the Michigan Agricultural College, for assist¬ 
ance in various ways. The nomenclature used in connection with 
the pteridophytea and spermatophytes is that of GRAY'S MANUAL, 
seventh edition. 
EARLIER INVESTIGATIONS IN THE PORCUPINE MOUNTAINS- 
The early interest attaching to an exploration of 
the mountains was based on the prospect of finding copper. 
Indications of this interest are shown in the abandoned 
shafts and wordings in various parts of the region. In 1848 
