﻿Chemistry 
  and 
  Physics. 
  151 
  

  

  fuse) 
  6458, 
  6088, 
  6042, 
  6034-5, 
  6025, 
  5498-5, 
  5462 
  (feeble) 
  5453 
  

   (feeble) 
  5423*5, 
  5409, 
  5385, 
  5340, 
  5311, 
  5292, 
  5250, 
  496S 
  (diffuse) 
  

   4941,4603,4588-5. 
  The 
  triplet 
  in 
  the 
  red 
  6042-6034-5-6025, 
  and 
  the 
  

   doublet 
  in 
  the 
  blue 
  4603-4588*5 
  aie 
  the 
  most 
  distinctly 
  recognized 
  

   lines.— 
  C. 
  R., 
  cxxii, 
  1411, 
  1534, 
  June, 
  1896. 
  a. 
  f. 
  b. 
  

  

  7. 
  On 
  the 
  Preparation 
  of 
  Lithium 
  and 
  Beryllium. 
  — 
  The 
  follow- 
  

   ing 
  mode 
  of 
  preparing 
  lithium 
  and 
  beryllium 
  has 
  been 
  described 
  

   by 
  Borchers. 
  In 
  the 
  case 
  of 
  lithium 
  the 
  solution 
  of 
  the 
  chlo- 
  

   rides 
  of 
  the 
  alkalis 
  and 
  alkali 
  earths 
  is. 
  made 
  slightly 
  alkaline, 
  

   evaporated 
  in 
  an 
  iron 
  vessel, 
  fused 
  with 
  ammonium 
  chloride 
  to 
  

   render 
  it 
  neutral, 
  and 
  eleetrolyzed 
  with 
  a 
  current 
  of 
  1,000 
  

   amperes 
  per 
  square 
  meter 
  of 
  cathode 
  surface, 
  the 
  electromotive 
  

   force 
  being 
  5 
  volts. 
  The 
  upper 
  rim 
  of 
  the 
  iron 
  crucible 
  is 
  kept 
  

   cool 
  by 
  a 
  circulation 
  of 
  cold 
  water, 
  so 
  that 
  a 
  thin 
  crust 
  of 
  solid 
  

   material 
  is 
  formed 
  on 
  the 
  surface 
  which 
  prevents 
  the 
  metallic 
  

   lithium 
  from 
  coming 
  to 
  the 
  air. 
  The 
  metallic 
  globules 
  are 
  placed 
  

   in 
  a 
  paraffin 
  bath 
  at 
  130°-200° 
  when 
  the 
  pure 
  metal 
  rises 
  to 
  the 
  

   surface. 
  Solutions 
  of 
  beryllium 
  chloride 
  are 
  evaporated 
  down 
  

   with 
  an 
  alkali 
  chloride 
  and 
  ammonium 
  chloride 
  and 
  eleetrolyzed 
  

   in 
  the 
  same 
  way 
  as 
  magnesium 
  chloride. 
  Calcium 
  and 
  magne- 
  

   sium 
  chlorides 
  must 
  not 
  be 
  present. 
  If 
  the 
  temperature 
  be 
  not 
  

   kept 
  as 
  low 
  as 
  possible, 
  the 
  beryllium 
  forms 
  an 
  alloy 
  with 
  the 
  

   iron 
  of 
  the 
  crucible. 
  — 
  J. 
  Chem. 
  Soc, 
  lxx, 
  ii, 
  520, 
  September, 
  

   1896. 
  G. 
  F. 
  B. 
  

  

  3. 
  Light 
  of 
  the 
  gloio 
  beetle. 
  — 
  H. 
  Mueaoka 
  has 
  studied 
  the 
  light 
  

   given 
  by 
  a 
  large 
  collection 
  of 
  the 
  " 
  Johanniskafer 
  " 
  and 
  has 
  

   found 
  some 
  interesting 
  relations 
  between 
  this 
  light 
  and 
  the 
  effects 
  

   of 
  the 
  radiation 
  from 
  uranine 
  salts 
  observed 
  by 
  H. 
  Becquerel. 
  

   The 
  chafer 
  or 
  beetle 
  used 
  by 
  the 
  author 
  constitutes 
  one 
  of 
  the 
  

   sights 
  of 
  Kyoto, 
  Japan. 
  About 
  the 
  middle 
  of 
  June 
  one 
  sees 
  

   thousands 
  of 
  these 
  beetles 
  lighting 
  up 
  the 
  environs 
  of 
  the 
  towns. 
  

   The 
  experiments 
  were 
  conducted 
  with 
  over 
  300 
  of 
  these 
  chafers 
  

   confined 
  over 
  the 
  experimental 
  sensitive 
  plates 
  by 
  means 
  of 
  a 
  net. 
  

   It 
  was 
  discovered 
  that 
  the 
  natural 
  light 
  of 
  the 
  chafer 
  resembles 
  

   ordinarv 
  light 
  ; 
  but 
  on 
  filtration 
  through 
  cardboard 
  or 
  through 
  

   copper 
  plates 
  the 
  radiations 
  exhibit 
  phenomena 
  similar 
  to 
  those 
  

   observed 
  by 
  Becquerel, 
  and 
  also 
  phenomena 
  analogous 
  to 
  the 
  

   Rontgen 
  rays. 
  The 
  filtered 
  rays 
  manifest 
  an 
  extraordinary 
  phe- 
  

   nomenon 
  (das 
  Saugphanomen) 
  which 
  is 
  analogous 
  to 
  the 
  behavior 
  

   of 
  the 
  magnetic 
  force 
  lines 
  toward 
  iron. 
  The 
  peculiarities 
  of 
  the 
  

   filtered 
  glow-beetle 
  rays 
  appear 
  to 
  depend 
  upon 
  the 
  physical 
  

   character 
  of 
  the 
  substance 
  through 
  which 
  they 
  are 
  filtered 
  — 
  per- 
  

   haps 
  its 
  density. 
  The 
  peculiar 
  phenomena 
  observed 
  are 
  obtained 
  

   by 
  filtration. 
  In 
  an 
  analogous 
  way 
  can 
  X-rays 
  be 
  obtained 
  by 
  

   filtration 
  — 
  and 
  this 
  process 
  suggests 
  a 
  means 
  of 
  rendering 
  such 
  

   rays 
  homogeneous. 
  The 
  filtered 
  glow- 
  beetle 
  rays 
  show 
  clearly 
  

   reflection. 
  It 
  is 
  difficult 
  to 
  show 
  refraction, 
  interference 
  and 
  

   polarization, 
  yet 
  the 
  author 
  believes 
  that 
  these 
  phenomena 
  are 
  

   present. 
  The 
  filtered 
  rays 
  of 
  this 
  insect 
  appear 
  to 
  occupy, 
  like 
  

   the 
  fluorescence 
  rays 
  of 
  Becquerel, 
  a 
  mean 
  position 
  between 
  the 
  

  

  