| Show I i II I I I IH SCIENTIFIC MISCELLANY Artificial Bilk of which the dally production Is now seven tons ton or IHo P tr r cent of ot the tho total consumption of Is practically puro cellulose to which the superficial l of natural Ilk has been given I Derome n French authority four principal varieties 1 those from nitrocellulose or guncotton 2 hydrate of oC copper lIk from cellulose dissolved dIssolve In liquid or copper ammo nl S 3 chloride of zinc Inc silks from cellulose dissolved In zinc chloride and 1 4 viscose silks from the decomposition decomposition position of of ot cellulose lose The best beat of or these silks oro aro about half ns nil strong ns the natural while the chief fault of nil all Is their great weak weakening ening by hy dampness They coat less leu than a third as n much ns real illk IlIk ls Is IsMe lose Me being claimed to be e cheapest and andoleo oleo strongest est antI and most t lustrous and to be Insoluble in water adds acids and al kalies A black disc marked with II white whit cross and rotated 50 60 to 60 time limes a 1 second has been beell by n Herman physicist ph at It for study stull Ing lightning flashes Bomo flashes caused the to appear once oth others ers HII brought It out several times and repeated repeal tl observations confirmed the Iho view that the discharge Is very ule hIe The duration of some seemed to tobe tobe be about of ot a n second In one Instance eight partial discharges followed each other at nt regular Inter Intervals vals als of about of ot a n second Oth shorter and nud some lome were evi cl dently not more than of a 11 sec second second ond Faraday thought flushes wore at nt least one second long The latest In teat chair for tor the of or seasickness has n movable seat vi 1 by an electric motor Ihl sensa lion tion produced being much like that ex cx experienced by hy the motorist Surprising relief to tho Iho sufferers is said to ba be beg given g e The novel recuperative boiler lately lely warded a prize by b the PMS Paris Academy of Sciences Is able to supply steam for tor hours after the lire hns been extinguished It Is tho Idea of ot M Maurice of ot tho Marine H It depends upon tH HH IIII H H H the tho heat hlat storage of ot a n mixture of ot having a It great heat th Is ro m ture being placed d around the tubular of tho boiler and having Its 1111 temperature raised to about 41 0 de dc C during durin the tiring This meth method od HI of storage offers great economy In n Loth weight and space over the oia plan of using reservoirs of ot superheat superheated ed Id water Attar the accumulation Is jed a n new lIev reserve quickly follows tho Iho starting of ot tho fire and the advantages to bo he specially Important for tho marine and for tor electric sta litO stations litOt t ons The new lIew alchemy assumes that ele Cile elements ments of ot great atomic weight break breakUP UP UI Into substances of lighter I but thus far the tho only I observed havo been bElen tho changes of oC radium milium and actinium Into nn of at which about 7 per cent I Ito I to form helium What becomes of remaining 93 03 per cent of tho emana emanation tion Is not et proven although theto tiro reasons for believing lead Is Isn Isn n part palt of ot the product In tho atomic disintegration llio ho given out fal falI I surpasses nil all previous experience and It Is estimated that If It a II fragment of ut could ho made to complete Its lis change Instantaneously Iho would bo an nn explosion millions of ot times more than that of ot guncotton I i Carbon tho new oxide of oC carbon obtained by b two chemists of ot Berlin university contains three I of oC carbon to two of at oxygen and ut or ordinary U Is a gad which burns burn In the all air with a smoky lias a n penetrating odor Ilko mustard oil and violently attacks tho eyes noso and respiratory organs On cooling a II fell faw degrees U It condenses to If a 11 colorless highly refractive liquid Sealed Scaler In a glass tube tUbo It slowly changes and 1 becomes a B dark red rell solid Water pipes are 11 protected from freezing by the uses of ot such Huch non conducting materials as straw cork und oakum In III a II new French method n II layer of ot straw sawdust or tanbark Is first placed around the pipe and pieces of lime ns all lurge as tile the fist 1st rO then I en packed around this cOlUng ond enveloped In a n layer of at material the whole being held together by 11 n II wrapping of at coarse linen The Inside In layer serves senell simply to protect the pipe from cor corrosion by the fresh lime The outer covering admits only a small amount of oC air and the moisture In this acts on the tho lime which h becomes become warm and II lid Is IsHO IsHO HO slowly slacked that th the heat bu bo kept up during an nil entire winter Frozen l roz rozen en pipes may ma be thawed by using some ome somewhat what moro lima IlIn Flaking rapidly by Ii pouring water over oer It ItA ItA A brilliant fireball scon se n In England on Dec 30 has haB been studied by Mr Ir Alex Alexander ander Boss Hosli from GO 60 reports of ot observations It seems to have havo become visible at nt n height of ot 69 6 miles over oler n point eight miles west cat of ot Thornhill In III It traveled about 6 dt miles with a velocity of or about 15 6 miles per second finally disappearing at 11 u Ii height hel hl of oC 31 miles above abol the sea miles south of ot Arran A remarkable luminous trail persisted for tOl nearly nearh a 0 quarter of at nn an hour The meteor was seen lIeen as ns much as miles away and at nt 60 miles was perhaps times as bright as Jupiter Calculation shown that the mass whose who e burning gave such sucha a II brilliant over a great part of ot tho British Isles l les was all astonishingly a it tow few ounces possibly a few pounds The fhe Insane In the asylums of ot Cana Canada ann da 10 number 18 2 an nn Increase of ot 25 2 per percent percent cent since 1891 ISH One OM authority at attributes attributes tributes the Increase e to 10 Immigration lax Inspection In at III port of the Immigrants of at atthe the last ten years been at nt least leut partially Insane I The Tho In existence f f L f L r i i f i 1 v f 1 i inre further from having be n taken by b the electric light 1 tire lire six Ix I I were made by Ii Leon Foucault In IW 1844 which have hae Just been lle to I the by a French This us nf r the electric light its lis first to 10 In the new S for tor sold from the ocean a ton to II the vater waler la Is treated with n of at nf of chloride of ot tin when tho Ihn gold Is III cnn nil Into Inlo purple nf or Cnn 1 lu lul ont ma mabe a I Ibe be precipitated with nf of Iho of or tin 1111 hy n 1 pound of or f When this Ihl li 18 dissolved In III of cyanide lo of potassium he cold may he be rd or other process showed no gold In the Ihl l the hut hul were found In water from the Iho Atlantic Alcohol In dome lorne form win former tho nil III In III re In I n Medical nien hl 11 hive gradually It II to 10 h bo of le II value us liS a l healing a iK 1 nt I than vu ra PO Dr n Hurtti norn lin hOl now cited London rondon II that ther are nn many without Is as n with It II In one has heen practically 11 till for Instance the mortality from typhoid fever for ten years has beet but bUI 1227 per cent willie while In other metro hospitals the Iho rate rn Ie for 1504 wan n per cent centA A temperature of dl V P In the hns hils been re recorded reo corded for the hottest part of ex exploding e mixture In III t the tho last In t nf years Hr nr ha hn Ihal the S met In steel Is III often orten due to 10 tho presence of ot Ken which n 1 nitride of ot Iron the remainder of the and the Ihl of nt section under the the In a 1 ito l OMO ter Ir cent of ot carbon as a little nn all to percent of nitrogen caused Iu ell a n marked I 1 The r l n d by I i I I II HH fung steel in an III of or nl metal ns then im 1111 impelled n IT the p the n II II III usually seen on an nn etched surface lire are I I greatly In size Ize disappearing dl I entirely en lire with per cent of ot nitrogen HIHI with hard 1 uteri even Ilen less les nitrogen has de effect ertell and a l stool containing I per pcr cent of carbon wan made nulls ItlIe HII H HII H H f f fI I j brittle by to 00 I per ler cent of ot nitro nitrogen I I 1 I I gen ell the elongation on being i i I to u n tenth lenth of ot tho original l li i |
