Waterbury evening Democrat., 1888-06-18
SCIENTIFIC soUIes.

Lightning can be seen by reflection . dis tance of 206 miles
 During the last fifty years the climate has so changed that Q mn can live at an altitude of tenth of mile higher than before.
 According to Pakteur and Chamber1and. typhoid bacillus is in ntnety-uine cases out of a hundred communicated through drink ing water.
 E What may be of great value in ship build ing and watch making Is tho discovery that steel mixed with M per cent. of manganese becomes non-magnflc.
 A Frenchman claims to have invented Q thermometer so sensitive that its index needle will defect two inches upon tho en- trance of person into tho room where 1t has been placed.
 It has been statet. that railway trains In England are now dr ven at an average speed 14 per cent. higher than itwas twenty years ago, with scarcely moro than half tho quan- tity of coal
 A workman in the Carson mint has discov- cred that drill point, heated to a cherry rod and tempered by being driven into . bar of lead, will bore through the hardest steel or plate glass without ercepdbly blunting.
 According to Chicago philosopher flies are the revivified sn b oS blossoms which fall to the ground, decay and come forth hies. There is no such l1etry about tho origin of the flea, for his mother is sawdust, mainly fine sawdust
 Sulfonal Is the name of.a new hypnotic used to produce sleea Thesaverage dose in the beginning is fifHs sn grains, which may be gradually increased to Ixty grains IL promises to be espei lily useful in the treat ment of mental diso ,ders. ~ Dr. W. A McCo1r, of the New York City Asylum for the In ane, has found hyoscy- mine, simultaneously administered, very useful remedy in quieting mania, and at tended with less unI Ileasantssymptoms than are chloral or the br,midea rrry, Electricity is to bo enlisted in the investi gation of the purity of water. The volta meter fails to show any current passing through chemically pure water. As saline or acid contamination increases the con ductivity of the medium grows greater. The discovery of e7ect1io welding has sug gested the welding together oe ends of rail- so as to make cont inuous rails of 1000 tt 1,500 feet in length. The device would savs in wear and tear, tut would necessitate ( special joint to provide for the gap of six o1 or seven inches wbi h would occur between rails of this length u,der theranges of Nortl American temperature.
 The San Francisco MedicalaJ Journal says Is stated that oil of syisused in Switzerlans by butchers to keep their shops free iron flies, and that after . coat of the oil has beer applied to the walls none of these trouble some pests venture to put in an appearance This remedy has also been tried and foun, efectual in the south of France in lreservin, gilt frames, chandeliers, etc., from becominl soiled. 1tis remarked that flies soon avoi' the rooms where this application has bee employed A' ,s't -5 +@+'.4 In The London St andard is an account o a German doctors Investigations as to th size of mems and wunen's hearts. The mas culine heart weighsrnore and Is larger tha that possessed by tn, fair sex A heart, would appear, grows most quickly during th first and second years of life, and betwee the second and seventh years 1t doubles 1 size. Until the fifteth birthday the hear l still grows little. In childhood the mal and female heart are tho same size; but afte manhood the mas ctlline heart develops muc mora than the feanelo, and ends by beingtw
 square inches larger than the latter.