Miscellanies. 193 
19. Another work on Chemistry.—Messrs. Barnes and Saxe of Mid- 
dletown, have in press and will shortly publish, a Manual of Chemistry 
on the basis of Turner’s Elements of Chemistry, designed as a text- 
bovuk for students in colleges and other seminaries of learning, by 
_ Prof. J. Johnston of the Wesleyan University. Dr. Turner’s excellent 
work has been held in deservedly high repute, and as a general trea- 
tise on this branch of science, for a book of the size it is considered 
unrivalled. Much of the work, however, and especially in the later 
editions, is occupied with the minutia of the science, which, in order 
to give a full view of the subject, are indeed important, but which to 
the student in his efforts to master its great principles, are rather 
embarrassing and perplexing. Prof. J. has therefore formed the plan 
of preparing a work on Chemistry designed exclusively for use as a 
text-book, which shall present faithfully the great features of the sci- 
ence, with the most recent improvements, unencumbered with other 
matter that cannot be made directly available in the recitation room. 
To do this he has adopted Dr. Turner’s general arrangement, and 
made use of so much of his work as was adapted to his purpose, 
supplying the place of the remainder by other matier chosen from 
every source within his reach. The work will be of a medium size, 
but will contain as much matter as is generally made use of by col- 
lege classes. 
20. Progress of the U.S. Exploring Expedition —The vessels of the 
Exploring Squadron arrived at Sydney, New South Wales, early in De- 
cember, 1839. The officers and men were received with great kindness 
and treated with much hospitality by the authorities and the people. The 
Expedition sailed from Sydney on the 26th December, with the intention 
of proceeding as far south as circumstances would permit. It Was ex- 
as to be at New Zealand about the Ist of April, whence it will proceed 
to the Sandwich isles previous to visiting the Columbia river. The sci- 
entific corps were left at Sydney, with orders to join the squadron at New 
and. 
The schooner Sea Gull, containing fifteen persons, officers and men, 
has not been heard from for more than a year. There seems to be little 
ground for doubt that she perished at sea during the first southern explo- 
ration of the squadron early in the year 1839, and probably left no sur- 
vivor to tell her melancholy fate. 
21. Magnetic Observations.—We are gratified to hear that the Ameri- 
can Academy of Arts and Sciences have also resolved to co-operate in the 
great system of magnetical observations now going on in all parts of the 
globe. The Academy have appropriated $1000 for purchasing the ne- 
Vol. xxxix, No. 1.—April-June, 1840, 25 
