Show P 1 mccormick of 0 newark if J states that he has been engaged in working steel for the past thirty years mind finds in now processes always tho satan same story of imparting at III ott or ina hardness and dur clity to t chii a poorest mality of ofal steel cel and ana be says Ys that alt all working of steel A after r f the a orrin forcing is done bat baa but ont one C act nau ilk cly icly bat at tile the outer portion cools a anil contracts first and to 0 o tn a binl I 1 camps compacts tho the interior bairt tint w when a piece i cod is b brolin ell it shows a closer granular nu at appears trice after dipping dipp ioe but batt will often a n bo be so brittle all ai to broil break with a slight low blow and it annealed to its in previous condition it is no better than at lint first WOLFRAM srm sim is ia becoming Lecon noK an aa im im porta article of iron manufacture it Is a quite largely prod produced aced it fit several beveral largo large establishments in ia daod Qa od go rna n anil is also being manufactured i ia tb b atlantic states tho the qualities ties of this thia steel era aro wry very remarkable when SO annealed it is so hard that it will stand tin the beat file clo but when chilled it b becomes econos soft when hen ordinary steel would bo be hardened when chilled it gets cowed covered with cracks but it may bo be very well hammered when at t i a red heat beat bat any tools ditont be oiada at once with tho the hammer in their intended adape all the file fib will do nothing MOTO more to it tools steel machines instance are an esla aid to last much lodger than if rows of tho the best sheffield cast ca steel iligin at triumph fa pa fai i water walor has hai to lobe be lifted from t 0 thady stiver to the summit of Triai Br hill 11 vertical height of feet T tho horizontal distance is two and three quarter mils iha pressure per square inch in the water of the bocam pump 9 is i TOO 00 pounds three pumps aro used each lifting 2 gallons every 24 bouril houw the ati am pumps have a piston strove stroke of IS 13 inches the diameters of the steam and water py cylinders linders aro are respectively it twenty W P life inches and sixty inches T tho pressure a bove above mentioned io in the witter water alinder cylinder closely approaches that ordinarily dina nardy rily employed la in the cylinders of hydraulic presses tim THE preparations are being made laade at the woolwich arsenal for the erection of tho the 30 ton na 1 I myth steam dammeir hammert the lagest largest ever it w will bt be A ablo b to tat strike a blow equal to tho the weight of about SOO tons and the bed for the anvil has therefore to bo be of enormous strength an excavation 45 feet square squam and 21 20 feet deep lias has been mado made the then about IOU in number driven in the solid cravel about 20 feet and the interstices tiled filled up with concrete on base was placed a block of iron 3 31 feet broad and I 1 11 I 1 inches thick weighing 10 tons BINARY OR on w IV CARBON mr cortise Cor the he famous boiler builder budder providence it II L I 1 writes to the lie scientific american that ho be hall baa become so much interested in this binary cusino that he be is about to undertake a comparative test of the now in leation on a large scale for the express purpose of determining its economy if any over the beet forms of the steam stearn a we shell look for the reports of g the 0 o results with treat great inter cut fk WRITE bess A met metallic compound ocampo una has been invented which is called 1 whit 1 lite brass it is susceptible of high polish and at tho the famo am timo time it fuses fives easily and has been found by carefully conducted experiments ciner to surp surpass sit in durability dura bilty all 11 other anti friction meltaus melt als against which it has been tested it prevents the heating beating of jour journals gials |