INTRODUCTION. jg 



EQUIPMENT. 



Magnetic Instruments. 



A set of terrestrial-magnetic variation instruments with photographic registering apparatus of the 

 Eschenhagen pattern, supplied by Otto Toepfer, Potsdam. 



A universal magnetometer (travelling instrument), capable of being used for the absolute determination 

 of intensity, declination and inclination; supplied by L. Tesdorpf, Stuttgart. 



Meteorological Apparatuses. 



An aneroid barometer from the Norwegian Meteorological Institute. 



A thermometer -screen with its thermometers, and spare thermometers, from the Meteorological 

 Institute. 



A meteorograph (baro-thermo-hygrograph) from the Physical Institute. 

 A cloud-measuring apparatus, recently procured. 



Electrical Apparatuses. 



An Elster & Geitel's electroscope with accessories, for measuring the conductivity of the air. 

 A Zamboni battery (high-tension battery) with wires, insulator, and tightly-closing drum, for investi- 

 gating the radio-activity of the atmosphere; supplied by Gilnther & Tegetmeyer. 

 An Elster & Geitel's high-tension electroscope. 



Astronomical Instruments. 



A large theodolite with broken axis, borrowed from the Astronomical Observatory in Christiania. 

 A box-chronometer, Hohwii No. 639, and a pocket-chronometer Michelet, also from the Astronomical 

 Observatory. 



Books were also taken, paper, forms, etc., some tools, besides rifles and ammunition. As regards 

 food, only some delicacies were taken, as the members of the expedition lodged at Berg's whaling-station, 

 which lay at the extreme end of the promontory, as shown in the sketch. 



BUILDINGS. 



After Saeland's arrival, the following were erected: 

 The magnetic variation observatory. 

 The observatory for absolute determinations. 

 Thermometer -hut. 



Pillar for cloud-measuring apparatus. 

 The mark. 



The Magnetic Register-Observatory. 



The observatory was erected farthest from the other buildings, a little way from the shore (see 

 Fig. 1 7). It was built of wood (framework), and was completely sunk in the loose, brown sand of which 

 the ground consisted. The house was divided into 3 rooms, in order to obtain as even a temperature 

 in the north, innermost room as possible. The first room (entry) was provided with a descending flight 

 of stairs, and was separated from the inner room by a sliding door, 81, that room being separated 

 from the register-room by a similar door, (JH. In the middle room, various requisites were kept. 



In the innermost room, six pillars were imbedded in the earth, two large ones for the three variation 

 instruments, and three smaller for the three legs of the registering apparatus. The pillars were cut from a 

 mast-tree, and set deep down under the floor in a large hole, which was afterwards filled up with stones. 



