~ © Dr. Jackson was one of the earliest explorers in the Lake Superior 
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se 
148 : = Bibliography. 
A 
Copper Region; and some of the mines were first laid open by him. 
In the course of his investigations he has brought to light much v alua- 
ble information, among which are many curious and aap a! facts 
relating to the association of native copper and silver with 1 erals 
of the amygdaloid of the region. A large part of his ea bal ap: 
peared in this Journal i in former volumes,* and the last volume con- 
enter into a detailed review in this place. The Report: commences 
with a historical account of ‘the working of the copper mines in former 
periods, and then proceeds to descriptions of the region, its explorations 
and mineral productions. Several analyses are given of rocks and 
minerals, 
The volume contains a large number of maps, geological and topo- 
graphical, besides some views. There are’ also catalogues of geologi- 
cal, mineralogical and botanical specimens 
The Daguerrian Journal, devoted to the Daguerrian and Photo- 
graphic Art, owl so embracing the Seiences, Arts and Literature ; semi- 
monthly in numbers of 32 pages, 8vo. New York City, S. D. Hum- 
PHREY, Editor and Publisher. =The rapid prepress of science in this 
. 
with ee" popular arts as well as Painting and Sculpture. 
8. A Practical, Treatise on the Construction, Heating and. Ventila- 
tion of Hot- houses, ineluding Conservatories, Green-houses, Graperies, E 
and other kinds of Horticultural structures, with practic Sead directions 
for their ip me in Sc a to light, heat and air; by RoBERT B. 
9. ate “Eébo’ of Science: Inventions and’ Pateatts 8 insnilieg 
of 
PP- BF0,: ch ca Aug, 1G Edited by A 4 KInGsLey | 
+ Vol ahs p 81, and tnd er, 18; vii, 286; 5 88. 
