The Arkansaw traveler., 1884-03-22
lCs~sslei f,r 7zs Arkssss.v Trares.r SCIENTIFIC MISCELLANY

Hydrophobia is said 10 be unknow, among the dogs of Australia, which cir. constance IS supposed to explain the a.. ton of New South Wales and other co'. onies in foFbidding the importation If dogs from Europe and America.
 The period of the great come, of Iss, has been variousiy calculated a, -i,z,
 795 ,, and SIS T years. If 1t Were given period Of -5i years ii would appear 10
 be identical with the brigh, comets re. corded in the year 50 BIC. and in A
 
 During years travel in Bolivia, S.,. nor r. P. Moreno, Buenos Ayres. h.. found many relics of the early inhabi. tants, has made plans and photographs ot the remains of ancien, villages, an has secured, as he believes, abundan, material for study of the people wbn lived in that part of South America be. fore the Spanish conquest.
 When heated in a forge fire in con;.e. with charcoal, platinum becomes fusib.e Boussingault has supposed this to be cee to chemical union of the metal with ,ae silica oi the impure carbon. bu, the same phenomenon has been produced by :uo German investigators by heating to white ness thin slip of platinum enclosed r lamp-black free from silica.
 In recen. address before an EnslisA institution, Dr. T. Hudson stated tha, very remarkable thing about the sroti. fera,' or whee. animalcules. is that unde. certain conditions they may be dried ani kept tor three or four years and ,he= brought 10 life again by moisture. The world o; the ro:ifera, he added, is full oi marvels, and they can be seen with micro scopes of small power
 It is usually supposed tha, dew is the moisture of the air condensed by con,ac: with objects which are colder, and tha: II does no, form until radiation has re. dueed the temperature of the earth anc objects below that of the atmosphere. Late observations, however indicate tha; the process IS really the converse of this. viz: that the dew Is formed by vaner wh oh rises from warm soil and is con. densed by the cooler air. Probably be.h theoiies are correct, neither being true in al. cases.
 In consideration of the effects ot eii- mate Tn India upon disease Mir. S. \ Hi, has reached the conclusion that crimes ot violence Tn that country are largely re- suits of weather intiueace. being" propor- iional Tn frequency 10 the tendency 10 prickiy heat, that exeruciating condition of the skin induced by a high tempera- ture combined with moisture He be- lietes that any person who has suffered from this ailment, and knows how it al. fee,ed his temper, will readily understand how the conditions which produce it may sometimes lead 10 homicide and othe. crimes
 The brightness of lightning Speak. ing a: Edinburgh upon thunderstorm phenomena, Prot F. C.. Tait remarked that lightning is loo 900 times as brillian. as II appears 10 us, since the eye requires one-tenth of q second 10 receive the ful. light of the flash, while the flash itsei. lasts only about one -millionth of sec ond. As we see the landscape under the light Of spark from the clouds, it is one thousand times less brigh, than when H. iuminated by the sun, but if the light n'ng lasted oae-tenth of a second-so that We could realize its full intensity-i. would blind us with the brilliancy of one hundred suns.
 Medical Photography.-l, is s,ated tha; photogrs phic studios are now con- nected wl,h most of the French hospitals. and certain classes of patients are photo graphed on their entry into the hospitals and al regular intervals after. The pic,- ures are preserved in albums, and are valuable aids in the study of disease An electricaliy- camera has been devlsed for this class of work, and 1t en- aoies the photographer. when desirable 10 take a series of views in rapid success sion. The photography of microscopic objects IS also valuable branch of hos pital service. the importance of which Is rapidly gaining recognition.
 A diluted anaes:hetie-For producing Mons Paul Bert has found great advantages Tn mixing chloroform with ar ID he proportion of eight grams of the former 10 one hundred iiters of the latter aSou, fourth of an ounce 10 four cubic feet. The administration of the mixture IS said to be not disagreeable. and to be unattended with struggling and sensations of sutfoc ating. Complete in- sensiblity IS produced in six or eigh, minutes and in one difficult surgical op- eration II has been continued for an hour and quarter. Chloroform has been sue cessfully applied in this way to persons of both sexes. all ages. and in ali sta;es of health
 Floral W-eaths ; ooo Years Old.-Dr. George ochweinfurth has made an inter- esiing discovery of plants in the coffin of an Egyptian princess who died abou; I, % years before ,he Christian era. The hno comprises numerous wreaths. IF which are leaves of the willow. leaves of the da,e-pas:u. corn-poppy flowers and corn flowers. The inner parts of the pop pies arc so wonderfully preserved tha. pr. Schweinfur,h declares that botanis,s rarely succeed in getting such perfect specimens of those fragile flowers for their herbaria, while the cobra dark brown maintained in as high degree as n the dried specimens ofthe presen, day. Pine cones which must have been em- oloyed as funeral offering a, Thebes l,ieo or 200 years earlier. are now to be fv, f ~z.~