The Arkansaw traveler., 1885-09-26
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 SCIENTIFIC MISCELLANY.

the use of fulminating caps in shoo,in,.,
 leries have been reported. Such ,s.s-r
 should be well ventilated.
 Two microscopists, Dr. Nussbaum .,,
 Dr. Gruber, have arti6cially multiplied ;,.'
 soria by cutting them in halves, each haNh.
 coming a perfectly developed animal
 English physicians have expressed tA.
 opiaion that the use of dynamite tend, :.
 produce apeplexy, several miners hav;,.
 fallen victi ms to the malady in one distric,
 The electric light has been successful,
 applied at Woolwich, England, to eho,,,
 graphing the inte rior of cannea. Such ni..
 ures are expected to reveal the presenc. ..
 flaws.
 ireland's first deep-sea exploring e,.
 petition was recently fitted out at the expe,.. of the Royal Irish Academy, and has been q, work in the Atlantic about I7o miles wes, If Cape Clear.
 A Swedish engineer has produced, new explosive, which he calls romite n and for which he claims great strength, cheap. ness, and impossibility of explosion excen, when ignited.
 Prot. Kaltenbach, ot Giessen, has men. tioned two instances in which immunity from contagious disease-imparted by an at,ael | of the disor der-has been transferred from parent to offspring.
 A prize ot 5000 francs has been offered by Bauon Leon de Lenval, of Nice, for ,hA best instrument, on the principle of the mi. crophone, for improving the hearing of par tially-deaf persons, all entries to be made by December sr, 1887.
 From statistics collected in the abat. toirs of Munich and Augsburg, Strauss has found that not more than one calf in 100 ooo is consumptive. The danger of conveying consumption with vaccine obtained from these animals is therefore slight.
 Dr. Ernst Fuchs, author of a priz. essay on blindness and its prevention, states that short sightedness, which is increasing SO alarmingly among reading people, is the cause of ten per cent of all cases of blind. ress of one eye, and that the immoderate use of tobacco gives rise to partial blindness.
 Pneumonia.-Germain See, the French physiologist, has found that pneumonia nav De epidemic, but that it is always due to a specific parasite, and never to cold. In this 1t differs from such oth CT forms of acute in. tiammation as bronchitis or broncho pneu. monia, in which cold is the first cause and microPhytes play but secondary role. Para. sitic pneumonia has a regular and definite course, extending over not more than nine days.
 Mans Aucestor.-De Mortillet de. clares that there is sufficient evidence to show that animals less intelligent than man, but more intelli gent than existing apes, lived during the tertiary period of geology. The anthropethique, or ape-man, was an ancestral form of historic form whose skeleton has no, yet been discovered. This assertion was made at the late Gre enoble meeting of the French Association for the Advancement of Science, and from the discussion which fol. lowed 1t appears that the opinion is almost Unanimously shared by the scientific men of France.
 A Strange Foe to P.sciculture.-Mr, C. H. Murphy has reported to Prof. Baird re. markable slaughter of young trout which was witnessed in the Gunnison valley, Colorado, the destroyers being mos quitoes. Occasion. ally tiny trout was noticed to come to rest possibly for more air-with its head level with the surface of the stream, when a mosquito would instantly alight and insert its proboscis Into the hsh's brain. In the space of half an hour some twenty trout were thus dispatched and their bodies sucked dry. MT. Murray is satisfied that mosquitoes seriously diminish the supply of trout, if not of other varieties of fish.
 Fixing the Land.-The dunes of Gas. cony, according to a recent report by the Inspector of French Public Works. cover surface of more than 900 acres, and n.. more than 25o feet high and three or four miles wide. The fine sand composing them was formerly pushed constantly inland by the wind, covering fields and villages, and even buyiog churches up to their towers. Since r7so the difficult task of fixing the sand hills by creating growth of vegetation on them has been in progress, and has at length re- suited in averting great public danger and) forming fine forest The formation of new dunes is prevented by the building ef a wooden palisade, against which the sea raises so steep bank that no sand can be blown over the incline.
 The Science of Crime.-The science of criminal man will receive especial attention at the Anthropoiogical Congress which is shortly to be held at Rome and a cuy;ous feature of the meeting will be an exhibition this subject. Here the studert will find collection of 700 classified skulls of criminals, with the photographs of s,ooa and the brains of more than rso. Wax masks of large number of criminal celebrities will also be shown. To thesewill be added many specimens of the literary and mechanical work of criminals a record of physical and moral observations on goo ina md ou a<so nxA;rary rn~.