The car, installed in an annex to the shed, is marvellously devised. The lower part is completely surrounded with sailcloth. It receives its light through two lateral windows. The middle is occupied by a kind of mattress, covered with a sleeping sack of reindeer skins.
All around are compartments for holding books, charts, and instruments, toilet articles, and the kitchen utensils, arms, ammunition, etc. It is entered through a trap-door made in the ceiling. Above, at a height of one metre, a ring, mounted on jointed railings, which keep it in a horizontal position, forms a balcony, in the centre of which two of the explorers will remain while the third is resting. To this circle the instruments,—compasses, sextants, theodolites, barometers, thermometers, photographic appliances, etc., are attached.
The six ropes, by which the car is suspended, are joined at the upper part by a cable, which brings them nearer to the centre, while keeping them away from the balcony; they then extend from this hexagon towards the suspension ring, which is fastened to the net.
Six canvas pockets, with compartments, are fixed between the suspending ropes from the ceiling of the car up to the balcony, for the reception of any articles or instruments which the aeronauts may require to have at hand at any moment.
The load ring carries a table or board divided into compartments occupied by four baskets intended to hold a number of accessories, buoys, grapnels, ropes, etc.
In the centre of the platform a square opening leaves room for a rope ladder, attached to the appendage of the balloon, and facilitates the inspection of the interior through windows let into the safety valve. This platform may, if necessary, serve as a refuge for the aeronauts, should they be compelled to abandon the car.
The load ring supports a differential pulley for moving the guide-ropes, the action of which, combined with that of the sail, is to afford the possibility of a certain deviation from the direction of the wind.
The sails are fixed to the net by hemp straps.
The three guide-ropes are attached to this pulley by a very ingenious piece of mechanism. With the aid of a crank and a bevel gear, the guide-ropes, which are composed of several sections joined to each other by screw connections, can be turned. Should the end of a guide-rope get caught between the ice to such an extent as to arrest the flight of the balloon, the aeronauts can release themselves by exerting an effect of torsion on this guide-rope by means of the crank, and abandoning the length of rope caught; a fresh length of guide-rope will then be added at the top if necessary, making use of spare lengths of rope.