Show THE accessories OF THE WELLMAN POLAR expedition some of the wonders of science that A C in the attempt to reach the what may be called the accessories of f the equipment of tho the wellman polar expedition are by no means least in point ot of interest in the novel undertaking to reach the north pole tn in an airship the way in which the explorer has utilized the latest set entitle discoveries and inventions in his coming battle with the elements ot 0 the north form one ot of the most interesting chapters in the story of 0 preparation with the exception of the airship itself the wireless tele graph and the motor sledge or as mr wellman calls it the mechanical dog stand out as of peculiar interest should mr wellman and bis his corn coin be successful in reaching the pole the wireless telegraph instrument Is expected to inform the world of the act ot of placing the american flag that important point of the world worlds s surface within a few minutes after it has occurred should anything hap pen to the airship the mechanical flogs dogs offer the possibility of 0 motor ing over the tee ice and snow to safety the mechanical dog while it Is unnecessary to point out that without the utmost confidence in the efficiency and staying powers of he airship the promoters of this making expedition would not undertake it yet this confidence has not been of the blind sort that has paused them to hurl burl caution to the winds two supplemental provisions have been made lor for insuring the sue cess of the expedition and the lives of the explorers the most important of these Is the motor sledge which Is to be carried in the car of the airship and which it Is confidently be lieveld will prove of the utmost value in the event of accident to the airship at any stage of the voyage there are two of these sledges propelled by gas oline motors they have six horse power each the motor Is mounted on runners like those of the ordinary sled and the power Is transmitted by chain to a large front wheel which has breadth enough to serve the pur pose of a snowshoe and the periphery of which la is studded with projecting spikes to furnish the gripping power these mechanical dogs weigh pounds each and can be carried by MR WELLMAN AND companions IN AIRSHIP CAR made from a photograph taken in france at the testing of the machine two men they are so constructed that they can be knocked down and assembled quickly and when such ob stables are met as they cannot over come they can be taken apart and hauled by the explorers over the hard places in all previous explorations the eskimo dog has been the traction mainstay of the explorers while the anine of the north has proved of the greatest assistance in reaching high altitudes he has many drawback drawbacks but from rom his mechanical successor mr air wellman expects it if compelled to for ake sake his ship to derive all the ad vantages of the real dog and none of the disadvantages the motors used in n these novel sledges are air cooled of the ordinary motorcycle type the wireless s telegraph heretofore arctic explorers after leaving their base of supplies have been cut off from all communication with the more southerly world hun dreda of them have perished in places place not so remote but that they might have been succored had they been able to communicate with their base bass in this respect as in all other ways the wellman expedition will differ from all others for direct com munica tion not only with the base on dane s island but with the commercial ca bles of the world is expected to be maintained through the de forest wireless telegraph apparatus that forms an important part of the im sediments ments of the expedition the wireless telegraph service like the air ship while not having been brought to 0 o the highest stage of perfection or ertain certainty ty of successful operation nevertheless has become commercially practicable and reasonably reliable recent testa tests at sea have lengthened the possible comm coming p son dis disca to more than 1000 1 without re lay A complete less outfit form a part of the exper expeditions ton a apparatus and one of the bivol men who wll wil make th the e trip in airship Is a an expert wireless tele telegraph raph operator an and at Ham hamme mertest norway a point in touch with the atlantic cable the first wireless station has been established station no 2 will be at the base of the expedition on danes island and wireless station no 3 will be in the airship the aerial which on land and on sea going ships is a mast in this case will be a wire suspended I 1 from the airship and which can be colled coiled up out of the way when not in use the experts in wireless heleg raphy have gone over the situation in the light of conditions as they are likely to find them in taif arctic re glon gion and have given it as their ion ton that there is nothing in these con ONE OF THE mechanical DOGS drawings made from a photograph taken in france where the machines were tested dillons to prevent the maintenance of virtually constant communication between the airship and the dane island station in its present use at sea there are often atmospheric disturb ances which temporarily destroy the usefulness of the wireless apparatus appa ratu but these periods have been brief it la Is believed thoroughly by the experts 6 A 4 LA MAP OF THE POLAR REGIONS showing route of the Well rian ex lon and the location of the wireless telegraph station stations A hammerfest Hammer fest wireless station no 1 where connection Is to made with cable line B danes island wireless station and base ol 01 expedition in wireless telegraphy that tha nothing short of a catastrophe which creeks wre acs the ship and renders all apparius useless will prevent the publishing dally daily of dispatches from the ep r ers sailing in the airship As the magnetic pole of the 4 earth has been found 1200 1 miles froni iron 11 the mathematical pole on the cuia buia of north america it Is reasonably reasor ably certain that at the mathematical pole there will be encountered no ws ac c disturbances which will destroy abe usefulness use funess of the wireless apparatus moving pictures provided the importance ot of the expedition Is reflected significantly in tho the met that a london firm has sent cinefra co 0 graph operators to Spitz bergen for thy the purpose of catching on an moving fl 11 all the trial work done be bahir td cr I 1 serious flight Is undertaken ai r these operators have been in N r f fc photographing the trials of the w ch chanilal anical dogs and these films a a been shown in london with gres great t cess Spitz bergen Is as tar far as rf moving picture men will be abai a one of the powerful motors of the wellman airship the expedition but ample pio vision has been made for the cecur ing of still pictures after the aarel leaver leaven danes dane s island for 2 th t po the experiments with the ech ettl dogs were made in norway and th h results as shown by the moving P tures hown in london were emine ly satisfactory |