74 Chapter II. 



course formed an important part of our equipment and 

 special care was bestowed upon them. In addition to 

 the collection of instruments I had used on my Green- 

 land expedition, a great many new ones were provided, 

 and no pains were spared to get them as good and 

 complete as possible. For meteorological observations, 

 in addition 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 obser- 

 vations 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 chrono- 

 meters. 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 electro- 

 scope 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 



