SCIENTIFIC.

Otago Witness, Issue 1795, 17 April 1886, Page 28

SCIENTIFIC.

— Some time ago a civil engineer in K, inland effected a m u'Ucd improvement in tho m uiuVaclure of iii 'noxc-. Tin improvement ct.nMsts in foiMiin^a I'd io tins u-ed for preserved food, solid or liiniid, in Fuoh a way i.hat ib is simply pre~oed on, uud the e;.n is lii-i'mcjlie.-iiS' K-ilod. Intensal pressure canunt rcmo\« (hi-, H !. "Wfiler l>oiled in a tin (hus dosed h-i fuV-dto lorce it off, although tho steam pre.suie h,'-. l>"it! ihe can itself. A penny-pure, Jiowijver, iis"it :is a l"ver by boinij pla;j.l under a limfoimod .Mound iho top of 111 1 ! cover, with the hhouKov of the (Mil il.-.i 1 .-. a fulcani, r.iisL's Ihe lid v/ilh a remarka'lly small expenditure of power. The principle of thisiiigt.'iiiou.s and u.se!'ul invention is th'it of the Ave.lge ainl lever. The neck of tho tin on which the lid fitsis fnrmed al a very slight angle fi'om Ihe \eriical, and the rim of Ihe lid is made ab a corresponding an_;l(*, o't solder being u^ed tofo!ni.<lie joinr. The seientifiu joumdl that de>ei'ibes this invention contains p-u-tieulins of a furth'U' in. prow ment wliieh lia-, reci'iitly b"en nitido in tl'ts r.i.'i'Hifactuie. It eovMsls in the forming of a df \i ts-'oovo inside the. shoulderh of the can, which grip* ti)e lid as it is pressed down, thus holding tho lid more tightly, and making assurance doubly s-ure. Another improvement consists in dispensing with sokJer for the yearns of the tins without impairing their hermetical power. Many deaths and a large amount of .sickness have been caused in consequence of solder having been dropped in+o canned provisions whilst the cans were, being sealed ; but the invention referred to will have the effect of abolishing that source of mischief.

— In reference to tho influence of Ihe imagination on the body a doctor tolls tho following story i" the Ohicaqo Times-— "A big hulking fellow about 10 miles from town I was practising in, got thfi idea that he was going to die at just 11 o'clock in tho forenoon of a certain rlay. At nine o'clock a messenger came for me. I hurried out. _Whon I got there the crank had 15 minutes to live, according to his calculations. He did look likea man on the verge of eternity. His eyes were dim and sunken, his face had tho that peculiar pallor which her.ilds tho near approach of death, and his breathing was very laboured. The family were {ralbered around and weeping as they (ook a final leave. Something had to be clone quick. There was. a hmart-look-ing woman there, and I called her aside. Pointing to the clock on the mantel-piere, which the patient was watching, I said : ' When T have his attention him thai; a head.' Thru T crowded into the family group, bustled them into ihe next room, t>;it down ci Ihe cdj,p of the li"d and began tilling that f"l!o\v one of tho nin4 horrible murder stoiies vm cvi-r he.rd, T lonaiod it right in the town Hnvi; he new everybody, named the woman killed, wen I, into blood curdling detail-, and po oompl"tel\'nit(>r(MU>d the man that he forgi'this 11 o'clock appointment. When I g.ive him a chance to look ag'iin it was 20 minut.s in 1-, and he was ap.tuully mad for a time, claiming ho had been tricked.' Ife finally got lo lau»hing and we all look dinner toother. Tho nuxb daj he whipped two men at a barn-rai.-ing for twitting him about the programme of death that miscarried."

— A telegraph operator m Texas has made what he claims to b - t-o much of an improvement in the U'k'phouo thai, he will be able to usei'ie ocean telegraph cables as telephone Hues, mid by which articulate soim-ls mny be transmitted with about the same facility ihafc telephoning is now carried on over the telephone wires of ordinary distances. The inventor was led to hi-, discovery through ilio very .simple reasoning that, ii' machinery and batteries of a given power can convey the sou'id of tho voice a c-tv.-lain dWsuice, move powerful lmidimtry might transmit it further. This theory, in is staled, ha* being confirmed by experiments mmlc by tho inventor with enlarged instruments and machinery, the voice having been conveyed .' 'Mvml hundreds of miles with aVolul.^nceuivu y. Hi.-; sehoin*.' h;'S been placed before one of tho great cable companies-, which company, having examined Ihe re-,ulN .''ehieveu, has <M.tered into an agreement for the purchase of the sole right io um> his telophoiiL 1 , nn-l at Iho suit' time gave him carre lil.in.Ju to cohmiuv.! bis ('••rpurinu-nf.s Klr'ctriri.iU) of the hi^li, -t Ending on both sides of the Atla-ilic lihv<>. been engaged to v.wteh and assist in thr> work, which, although it has no'v been goins on for months, has been {■(it)ducted with tlvj suiorest secrecy. It is said that the deductions made from the results of [•bo exjjprim«nt:il in-.tvuj'ient have convinced \>i»i'ion« overlooking the work that the final machinery will iu&uro conversation between tho two hemispheres. Tho monej' required for carrying out the unilorfcukinif is being supplied by fi millionaire of world-wide fani'), who expresses himself thoroughly convinced of its practicability.

'■■'- ■ • - . , ' •■ , ■ ' <n ..•".- ! i • , i ..,..•'.■. ;■ 'i ' . . >- . • ■„.. . • i. -I .. ,:i 'iii_-t <i^ is .. . i!' '. '„ v • :i, i i, iL _t .u.ick. the ■ it ft' ■'-. -■ ■ i "<)ii , I'l l. bii^Lc io it \ •-. i ii. '-' n'> ' roliL- v ,'>i !. ,'i ! „\c^ ..fi!, ii, nit loi the ln.'iian.i' v\ i.ic.i li.o ] ; <,i..j,ii.c j.!o .iii biipCM,.!'.!;. to their '.vinpleviuiii. c •! oj all (Jhciiiiots <tud rcifumeru. UyiiOt, Hi and lib boutiiampton row, Lundon.

Ahvioe to Miitiier'! !— Are you broken in your rest by a sick ehiKl sulferlng \\ ith the pain of cut ting teeth? Go at, once ta a chemist and Ret, aliottle of Mils ■\Vi>-sj,ow> Soni'in.vii Sviu;i>. 11. will relime the poor sutfeier immediately. It is perfectly luirmless and pleasant to t,hu taste; it produces "natural quiet sleep, by relit 1 * in# the child from p.iin; mid t!ie little cherub awakes "as bright as a button." It soothes the child, it softens the guius, allays all pain, lelieves wind regulates the bowels, anil is the best known remedy lor d3'sentrry and diarrhoea, whethsr arising from tei'l.hing or oUipt causes. Mus V/i.vslow's Soothino Syhup is sold by mecli-cine-dealurs evervwhers at Is l§u per bottle. — Arivr.]

VAtUAHI,H DISCOVKKY FOH TJCE HAITI. — If yoill' hair is turning groy or wlute, or falling off, us« "The Mexican Hair llkvmveh," for it' mil postiircly restor tin ereri/ case Grey or While Hair to its original colour, without lea\ing the rtwajjiwiblo smell of mosf " cc-torers." It makes the hair charmingly beaut i tul, as well as promoMng the f^iowih of the hair on bald Knots, wheie the glaiuls arc not decayed. Ask your cheinibt tot " The Mr.xioAX llaui Kkneweii. ' Sold by chemists and perfumers everywhere at :5s Od per l"ott',e. AVhoie-6'-tl( J depot, 33 Fiirriiigtlon road. )a/Ihloii. — fAnvr.]

1' LORCLCiVK ! — VoX VHK XrKTH AND URKXTIT. — lev> ilroi>s oi tho liquid " Kloiui.ixe" Bpriukleil on a wet lo'jlh-bmsh jnoilucca a pleasant lather, which thoro\ii{bly cleanses the (cp(li Irura al! iiarasites or im])iiritios. hardens the gum?, prevents lartnr, slops decay, ghes to the teethapcouliai-pc-.uly whiteness, and a (.(clifthffiil iiagi.mee ro tliebre.'illi. If. removes fill uupltvsaiit odour ari's'iuj froi.i ilcruycil teeth or toliao f 'o-^nioke. "Tlio n? ia^i-aut Florilino" beinif oompostiil i'l part of hone.tr and. aweet herb?, is deli-3-u)ii3 to the taste, cn-l the greatest, toilet, discovery of the age. I'iico, L's 6d, oi all chemists and perfumers. Wholesale dfput. 3S rairiugdon road r,»iiilon.— rAi»v'i\l

Public BsvEfAcrnr-JS — Mrg S A. Allen has« j'istly earned tliis t,Ue, mhl tiiou&.uii... »tie (his day ...joieing over a Tmu houci of iiair produnfed by her unequalled prenaiation for u« toiing, lnvi.nor.itiiiy, and beautifylnjj tho hiiu-. Her Wovlil's l!.\'.r Kubtorur quickly cle^nbeb thu scalp, remo\ing damUutY, and ariests the fall ; the hair, ii fi-cy, is changed to its natural colour, giving it the e^yo vitality and luruiioua quantity as u> youth.