| Show and pa nt and cleaning machine out in the country where smoke and dust from factories and paved streets Is unknown it is corn j ively easy to keep a house look ins bright and clean on the outside even when it has been standing sev eral years but in the city where all is dust and smoke a newly erect ed stone bu iding or a freshly paint ed frame structure soon shows the effects of the dirt laden atmosphere A canadian inventor has just de signed an apparatus intended for use on fiame structures where the paint has become dingy and in case the awner does not feel that he can stand ohp cost of fresh painting this ch ne which is here illustrated has a water reservoir an air compressor and a soap containing chamber to gether with lines of hose and scrub brushes the idea is to mix the soap and water while under pressure and before it is discharged into the bristles that it shall be of the proper consistency to scrub the painted sur ice to which it is applied this treatment would seem to necessitate first class waterproof paint though perhaps even poor paint would stand against a weak mixture and light scrubbing with the brush in the case of stone work the laborer need have no scruples about exerting his strength as it is impossible to injure the hard face there Is jbv bously no necessity for transporting a bucket of cleansing 1 quid around on ladders and scaffolding as heretofore the comb nes the soap and water cleaning fluid being pumped directly into the brush where it is to be ap plied the pressure Is easily con trolled by means of the valves ir the handle of the brush as is also the proportion of soap and water the inventor is emile begland Ve gland dit labonte of montreal quebec new type of compass M heit a french inventor has devised a new type of compass which is of an automatic nature the diorec tion of the compass by this arrange ment is automatically registered min ute by minute so that by consulting the chart the ship s officers can ascer tain the route traversed at any time during the passage the compass card instead of having at its center an agate resting on a fixed steel point is fixed on steel pivot which rests on a fixed agate the latter is immersed in a drop of mercury which erves to conduct the current of elec that makes the registering of the movements of the apparatus pos sible colonel renaud of army aeronaut aad automobile celebrity has j performed another sc ervice for auto mobil ism there was recently laid before the french academy of ances an ingenious contrivance in vented by him for measuring the power of motors it is an apparatus which is attached to the axle tree ot the motor and as the action developed in proportion to the cube of the speed it Is enough to register the number of revolutions in order to de termine the speed and consequently the corresponding power Sel fregis bering tablets are provided to obviate all necessity for making calculations the apparatus Is capable of register ing up to horsepower electra trolley dmn buses electrical trolley omnibus lines as a paying investment are meeting with serious consideration at the hands of capitalists of the smaller cities of the middle west where opportunity is of to connect two or more cities by such a system on many 1 nes in such cammi n ties it is doubtful if the great expense of laying ra Is is justi flable for with the trolley system the track is by far the greatest expense with its contingent expense for right of way for example in the figures before the writer on the construction of one trolley line out of a total cost of approximately 1 more than one halt was absorbed in building the track while the overhead equipment cost but 90 and the rolling stool an additional it Is obvious that any system would be much more likely to pay if the construction of the track can be omitted and such omis sion should prove bract cal on the level hard road of the prairie states at least and equally effective in the more hilly country where good roada have been built new par s an pavement granite asphalt is the name of the new pavement notable for its dur ability and hygiene which is be ng introduced in paris nature creates calcareous asphalt but paris makes granite asphalt by a special alon of physical and chemical quail ties granite asphalt has the resist ance of rock and may be employed on the most generally used thorough tares and it does not draw the heat of the sun less than an inch in thickness suffices for simple side walks while from four to seven inches is sufficient for streets of braf alc the new asphalt is also being employed for metropolitan street stairways new var able stars during an examination of photographic plates taken by M brojko at the moscow university M cerasa detected three new va bable stars the first baies from the ninth to the eleventh magnitude the second larae varies from the tenth to the twelfth and the third lacer tm varies from the ninth to the and probable is of short period i |
