ition to the ordinary thermometers,
barometers, aneroids, psychrometers, hygrometers, anemometers, etc.,
etc., self-registering instruments were also taken. Of special
importance were a self-registering aneroid barometer (barograph)
and a pair of self-registering thermometers (thermographs). For
astronomical observations we had a large theodolite and two smaller
ones, intended for use on sledge expeditions, together with several
sextants of different sizes. We had, moreover, four ship's chronometers
and several pocket-chronometers. For magnetic observations, for taking
the declination, inclination, and intensity (both horizontal and total
intensity) we had a complete set of instruments. Among others may be
mentioned a spectroscope especially adapted for the northern lights,
an electroscope for determining the amount of electricity in the air,
photographic apparatuses, of which we had seven, large and small,
and a photographometer for making charts. I considered a pendulum
apparatus with its adjuncts to be of special importance to enable
us to make pendulum experiments in the far north. To do this,
however, land was necessary, and, as we did not find any, this
instrument unfortunately did not come into use. For hydrographic
observations we took a full equipment of water-samplers, deep-water
thermometers, etc. To ascertain the saltness of the water, we had,
in addition to the ordinary areometers, an electric apparatus
specially constructed by Mr. Thornoee. Altogether, our scientific
equipment was especially excellent, thanks in great measure to the
obliging assistance rendered me by many men of science. I would take
this opportunity of tendering my special thanks to Professor Mohn,
who, besides seeing to the meteorological instruments, helped me in
many other ways with his valuable advice; to Professor Geelmuyden,
who undertook the supervision of the astronomical instruments; to
Dr. Neumeyer, of Hamburg, who took charge of the magnetic equipment;
and to Professor Otto Petterson, of Stockholm, and Mr. Thornoee, of
Christiania, both of whom superintended the hydrographic department. Of
no less importance were the physiologico-medicinal preparations,
to which Professor Torup devoted particular care.

As it might be of the utmost importance in several contingencies to
have good sledge-dogs, I applied to my friend, Baron Edward von Toll,
of St. Petersburg, and asked him whether it was possible to procure
serviceable animals f