| Show SCIENTIFIC MISCEllANY It A special stud ot colors antI their ch chemistry has ha been m made b by J G 0 Vibert thu thi reat French pRinter lie finds the ancient paInters or of th the time ot of had only tour four colors color chalK white ellow othor red ocher and md bAck In time there had boon been added chalk lead white while and Its it combinations maa minimum red and yellow ellow or of arsenic red and lakes outdo tram from hella natural and burnt cInnabar Indigo pow powdered powdered dered Emul Emeli blue brown ivory black and other blacks and sepia Later tho re red l lakes made tram from cochineal and tram from mad nad madder nadder der and the yellow ello lakes lukes al also alo so o the true ultramarine blue from the I costly laps lapis lazuli A chest In the of Antwerp contains n a ot of the colors used by ns and ot of white lead cinnabar lapis lapla ultramarine the madder lakes lakee the tho earths and the have proven very ery durable while the tho vegetable gel yol lows reds rede and greene have faded and vanished or Of the many colors cobra brought out since Rubens Rubena time those or of ani often otten brilliant but deceptive are held to been an un unfortunate fortunate addition for tor art It III Ia eon On eluded that the tho finest colors are those or of pure pigment with little or poppy oil a a 11 medium and that the mineral those from I vegetable generally generall i permanent but hard to set get In A number ot of samples ot of cement from rom the ancient water ot of l and Smyrna have been lag Ing to be ot of composition al although although though ranging In date from oeral hundred years before Christ to three litter The were found to be chiefly lImO with a 11 enl proportion ot of tatty fatty acids Experiments meats ments Indicate the tho cement wall wae 1 a mix mixture mixture ture ot of two parts ot of slag or limo lIml with one part or o olive olle oil as thIs was hard and durable treatment ot of soil soli with lime has been suggested to the tho Paris Academy of at Science a en aa remedy for tor ma malarin larla larin ag It has hils been noticed that coun countries countrIes tries having Q a surface rich In lime are tree free from this malady A clever Xray trick Is described by Dr In the Scientific American To heIghten the effect a alamp lamp may be placed behind the sitter In front ot of whom Is then held the ap apparatus which looks like the lene tube or of 1 a camera with a sh sheet t ot of white paper exposed In full tull view M a the plate and the rubber bulb apparently apparent operating n a pneumatic shutter Is The result is 18 picture ot of the BUb Internal organs flashing Into view In strong color colors The Tho picture II is previously painted on the paper poper wih diluted solution of at of at beIng use used for tor the lungs a more con concentrated 1 solutIon ot of the name Mi for tor forthe the hear heart and ond the l arteries a solution ot of ot of potassIum for tor the larger veins and a weaker so of at th the same snit salt for the stomach and a few tew intestinal coIls l For or the rest of th the bo body I is u used w n a concentrated so luton or of tannin The tube realy really con tame only a small mall atomizer and pres pressure sure on the bulb forces from rom this upon the paper an invisIble Ilnay spray of ferric chloride solution producing well vell known chemical reactIons In a cae case reported by Dr Woods the only nt be had leon seen to recover from tetanus was treated b by hypodermic mic injectIons of ten ver cent solution of carbolic acId ever every halT hour except when quiet at night able to swallow swallow low A dram ot of the solution In gl cerIne me Ine WI was then administered ever every thre three hours hour UntIl the spasms ceased and ut at utter attee tee ter that less frequent and smaller dOes doses untIl ni all rIgIdity had disappeared Like treatment effete effective In n a case ot of tetanus In 1 a horse Mik Milk containing fe five per e nt or of borax Is by M I l Ed d Crouzol ni as a n Hal eral antidote to poIsons hone Doric acid aehl is i precipitated ns as an insoluble borate by b most mIneral ha basos s The fhe casein of at milk coagulates wih with toxic acids an and nl also o forms tonn insoluble with mineral mineraI boss bases whIle the tat fatty charac te tee ot of milk Irritant substances effect tram frona taking too much erect The number ot of winks In a given tm tIme Is found by t a physIcian to furnish h n a fairly accurate measure ot of the degree of eye fatge fatigue caul caused by various This metho method gave ave the following unexpected r from readings or of ten minutes Wih With n a cn can candie die GS 65 winks per minute cl city gas 28 S sunlIght ht i U electric pr light 18 A Industry o of the island or of Procida Is the manufacture of Ino line silk Ik threads freni th stomachs ot of Ilk silk silkworms won worms The worm just juat before the time Ume ot of IH Its Is cut open and the membrane ot of the stomach Is care carefully r tul fully removed anti hy by 1 a secret t one ne end In the teeth and drawing the other wih with the hands handa the work the U tissue ue Into threads ot at considerable The he n are for ard fex flex and find 1 a In norther northern Ial Italy lt at 15 l n a They nr are tle tr tackle brushes rte etc ProductIon Is 18 as the tho worms bo be taken st at tho time ot of their t value 1110 for or and tho ortons operatIons demand much labor b by hands c c cc A ne new prImary bateo battery patented b by c H 1 1 Anderon Anderson has UI as the n atho c a carbon that I as the tho c positive electrode The electrolyte con cn ot of one pert of at arid acid C with Ith three e parts of water with whit of about ot of bo the tho addition two trl parts C arh acid A source ot of e n II Is also c such as S acId or atmospheric air airA C C CC CA A n new w plC ot of tobacco hen haa b Jr Mr MrA A L Sto on Soc Socorro island o of th coast The M number ot of of tobacco now known to botanists is II o about i are to 11 1 to 70 er cent in the eon on nt it on n a HusIan raI railway W hl the weight ot of trains In has U I Ib b been n increased b by n a similar percentage A steel t reservoir ot of about 30 o II is placed over ocr the bol boiler r anI Is hotd heated by the tho steam not u used to drIve thruSh through the It ItI engine Al All iCed water passes C I tt o 0 c |
