Scientific and Useful.
Mataura Ensign, Volume 10, Issue 684, 8 July 1887, Page 7
About this newspaper
Scientific and Useful.
Phosphide of calcium on'becoming wet will giVeroffi,*epf?A|Bp?pii9ly gpmbu§Jiible ? , pljc-Bs; phuq»rd§pea "Tiyarogen", thus emitting iighV 1 Thisjisftho principal . groclient used ,19 the 1 distress and'g^i'dipg "signals thrown ;into. ihV jfator from a siri'iing* ship, ' principally' to » g^uid ( e those in tU© water to the boats. , ... ' , - WOOD PTOP.' •••••• • -i..v 1 A'wrifer in a Canadian paper, speaking of • ' fhe p'oßaibilUies ot pulp as a siibtitute 'for i v lumber iff th6''ra'anufacturo of furniture and . other nrtioleß now exclusively made of wood;'' calls' attention.' id tho resources afforded by ifortfiorn: Canada 'for the beet pulp-making , Woods. It is found in some localities tho » forests are now at the beßt age for pulping ) purposes, and capable of yielding from 40 to b 120 Cords per acre, if the whole of the timber '" were utilised. By mixing the pulp wfth" ' clays, Bteatite;:fl,Bbeßtoß, plumbago, mica,^o., ' Bqbstancoso^eyery. possible colour and com* ' 'p'actpess may' be produced. r Persian rugs are all made by handi with. out ; one. exception. are . stretched on >. frames as oho would make, a sampler/ and all )] the! family work on them. A pattern for that l particular carpet isbefore them,, which .they,, j follow with more or less precision, tfccprd,itfg as their fonaf suits them. As ! a rule, siderable license is allowed for tho expression p : of individual taste in working out those pat* , terns. No two carpets are, th.crefo.rej ex^ 1 aclly alike, §nd tho owner of an old Persian ] vug may be. reasonably sure that while be may 1 ,flnd; oilier' '"ruga resembling his, not' 'one 3; absojutoly identical exists. This quality piyos '• thoin a value similar to that posso'saed by an f oil painting. • '" "' ;' ■ J ' THE PITA P^ANT., . . * Mr. Burcb,ard, Au^ericafl.^tjnsui in Hondu*, i. raa, report^ that ;,the , p'ita. p^ant, vfbibliy has a never been cuHivaJ?d, grows . spontaneously, lP - and-in appa.reTitly inexhaußtiblequantitieß^by a, the n?ftrgin rof Jagopn,. and,,, indeed, „ evorywlieifdf below' the 'attuude -of "Sotfdft;- ' II V can bo had for the coßt of cutting. The fibre is eueoeptiblQ of a thousand uses. Th<
people of Honduraatife^eWi^into thread fotf [sewing boots and shoes; BDd into/nets,-, fish-jinee, and". B cordage'r'l3lie'i!fin'est« l lham' mooks<fwid.mQßt costly yare made PX jfr T% sma)l^aJni){ties wß!ch/have*Bwfl' ) len?w thß* i market 1 kerahiqffl, laoearrribbons, fafse hair and wigs. , difficulty is^tp^dioorticate the plant with'■bub rotting or otheywis^ injuring the fibre.. The p^^er.';^at*'%ev6afm9n :n^%dsses of ascending'; watorf alls ,is thjJCsjabje ot7 0%-some interesting!" detaps-^pf Pr^f .?? A) : L|ndmark, [ direotor-in'OliieflolEithe NoVwegian-isheries. '.Mo states that ln^ertaink&s'ta salnXoii s have been obserredlto; ascend a' distance 6^16 feet, and he feels tfiisltoibe^ruefrpm having seen; : them lejip^;6yeritw6';jinMtß..!w'Kich^we^BJf6. 1 apaijfc, and^bio^;hß;d.been''°pJißoed'^r¥|d'. < ,th*e; 1 rifer, ata^ut'il^;f^l;aboTO'|i|rateryai^Bolle*; fofsj upon^he'Srams, a.t Haugse'nd.-Jle'saysr I 'Ibvjbn, tbat certdin'salmbH,; .on . ascending a ;' '^rtieabfalb.aEe «4PAble. fchey^meet ihe fall ; a 2 « rig^ r ftnileF^M^«the 3 mfefe,"^f. ' retnaining-'a : minute or) two in" the^midstf of :thejmassof the falling .yater,. : if they do not . succeed in passing over the fall at a, single .;$$ .-!&"■*•; "••-■•'.- '■•■•••■^ ; ' Thoeouni^hi^U^lltMndor^dhyto' • the faotithaVthe nir fravoHiedby.an- peieotrio. ! raised to a Teryihighoee&peratiifAtanct has > its Volume, moreover, considerably increased; ;'■ oolumn of gas ttyu.3 enddenly-.heated and is sometimes' several' miles' long; as ' fchb ! duration !'6f l: the^ash I ia I 'h6fc'eve'h a . millionth >;of ; a > Second,-* it i follows • .that ;the '• noisVs bursts forth.; at once; from the 1 whole > 'cpli|mn;"butfor an .observer, in' :any. ;one : ' 'plado it commences where thq lightning jU-at [ thej least > distance.: fin .precise termsj' the beginning of' the'; thunder clap' gives; ub the ' minimum distance of tb«i lightning; «nd 'the l " length ofi the'thutider^JblSp' gives i;iw)the 1 length of the column. It-must be remarked 1 tHat ,wheh a flasti^of lightdihg^fcKKs^thb^ ground, it is not necessarily from>^the place struck that the first noise, is heard., , .. r , if&S | PETBpiKirai:r,nßji f ,., > ,. 2 ..; 1 -'s DrvTauffman, in>;,a;,re.p.Qrt tp,/.the Ru^Bian- Government, says petro'eum may.be .saponifiedijust like dilV, fatsj%o.' ( I*o* cfo this the oil is Heated, a4d!4frMu (bOfiqpeSvaSß&tS^itß weiglit; of commoq ; , soap is pdded )-.and! boiled togetlier for, half an hour. 'After, this' } . the soap' wnrdilsolve? 'and •th^fluid'>urn Into a hardened substance, whioh' ie t '-very:ha¥d to ligh(,.and J burnß. three timeß ; piqre.Blowly.than coal* with a reddish- flame producing, great heatj. It. could well be used in a store, tbere beiag.no smbkft 'front itj anti' Very probably it. < j^ijlvtako the place of coal. If tb,ese^ results be realised,. petroleum as a, fuel, may clajm )t%p |bTl6wfh'g advainlage's': — l.f tis iiniverkaH : abnndant,iand oheap ; 2. Itmay^be pressed into] any form ; 3. It burns slowly, without (OnyWoke, and, producing great heat; 4, The : ilpid can'be pip'od l t6' the : p6int. : where it is desired to solidify it at 'a less cost : than coal can be camed-by rail..,. } =, t . •'■- .. A- careful .review, of , the, , evidence ; . gives strong reason for 'believing 'mat whiifc' is now the feause of the preference of the ; right;- hand' was originally an .effect. ,N,eith?r ; the Bpe,snQri any other of th*e lower animals,|how ajimilar, inclination for the special_uß&"6s the HgKt limbs. It .is .purely a human attribute, anji probably " arose gr ; add4lly fforif tbe^Be,p'y the earliest ' races of men> of the 'right ' arm in fighting, while the left arm w.a,e '-reserved : to . ; icover the left side of the. bqdy,.where wounds, as tHeir experience showed,' 'were most dangerous i Those whd negleoted this pre« caution would be most : likoly; to be. killed ; and: hence, in the lap.se of time, the. natural , JurvivaHwodld mnke : the human "race," in ' general, "-right-handed ft With ; occasional' reversions, of course, by, " atayism/'.jto- the left-handed, or, more properly, the ambidextoroujs.?qnditipn.;i,Tho i,Tho ; more fretjuont'and. en.c r'getic^ jywe of, . the, , right . limbs ojE course, rea'clf upon the brain and bring about' the 'excessive development, of the left lobe, , such, as now generally- obtains.' ' ' Ttie action , of ,the; Maxim machi^e^ gup -,one-bf wßieH Mr'H. ST. Stanley has taken with liiml in his expeditionjjfof' 'relief "of Bmin > J^sha, is automation ea'ch cartridge being dis' charged by .the recoil of the ( shot f pr^ceding. , The icai i 'trid^eV i are placed in a J belt, 'and^' the empty shells are thrown out in front of the gun.- ; The rate ;of tfire ■ is! 600 times a' inibute'. ' rapidity-iof fireUs /such' that at a thousand yards range 20 bullets will strike : the after the gun ; cpasqs tp fire, ; whil§ i: D 7 'giving .the giin a very hign eleyatipn, 500 rounds 'may be dfsefia'rged before the 1 first, bullet strikes the'grottnd; ! To t; prevent too' great heating a water tank io -provided,' from' whion the water is fedi'ihfough the' casing aro.und the barrel, . . Th? amount ; of Jheat thus generated is about li units for each discharge, and- a thgusancl^rounds; evapor• ate faaorefXbanwpint^fwafew^Thtf-giuiHs' mounted pivotally, to, admit pf f considerable, latitude of range,' 'and' ; it ' may bo' turned readily in anyjdirection. > -.i".}.' '.;iU '■
