﻿668 
  INDEX. 
  

  

  T 
  

  

  Temperature 
  and 
  Density, 
  on 
  the 
  quantities 
  of 
  mechanical 
  energy 
  contained 
  in 
  a 
  fluid 
  in 
  different 
  states 
  

  

  as 
  to, 
  475. 
  

   Temperature 
  in 
  Liquid 
  Water, 
  on 
  the 
  dynamical 
  equivalent 
  of, 
  and 
  the 
  specific 
  heat 
  of 
  atmospheric 
  

  

  air 
  and 
  steam, 
  191. 
  

   Terrot 
  (Right 
  Rev. 
  Bishop). 
  Summation 
  of 
  a 
  compound 
  series, 
  and 
  its 
  application 
  to 
  a 
  problem 
  in 
  

  

  probabilities, 
  541. 
  

   Thermometer, 
  on 
  the 
  absolute 
  zero 
  of 
  the 
  perfect 
  gas, 
  561. 
  

   Thomson 
  (William). 
  On 
  the 
  dynamical 
  theory 
  of 
  ^heat, 
  with 
  numerical 
  results 
  deduced 
  from 
  M. 
  

  

  Joule's 
  equivalent 
  of 
  a 
  thermal 
  unit, 
  and 
  M. 
  Regnault's 
  observations 
  on 
  steam, 
  261. 
  On 
  a 
  

  

  method 
  of 
  discovering 
  experimentally 
  the 
  relation 
  between 
  the 
  mechanical 
  work 
  spent, 
  and 
  the 
  

  

  heat 
  produced 
  by 
  the 
  compression 
  of 
  a 
  gaseous 
  fluid, 
  289. 
  On 
  the 
  dynamical 
  theory 
  of 
  heat. 
  

  

  Part 
  V. 
  On 
  the 
  quantities 
  of 
  mechanical 
  energy 
  contained 
  in 
  a 
  fluid 
  in 
  different 
  states, 
  as 
  to 
  

  

  temperature 
  and 
  density, 
  475. 
  

   Tourmaline, 
  Titanium, 
  and 
  Quartz, 
  on 
  the 
  optical 
  phenomena 
  and 
  crystallisation 
  of, 
  within 
  mica. 
  

  

  amethyst, 
  and 
  topaz, 
  547. 
  

   Traill 
  (Thomas 
  Stewart), 
  M.D. 
  Dissertation 
  on 
  a 
  Peruvian 
  musical 
  instrument, 
  like 
  the 
  syrinx 
  of 
  

  

  the 
  ancients, 
  121. 
  

  

  V 
  

  

  Vital 
  Affinity, 
  defence 
  of 
  the 
  doctrine 
  of, 
  385. 
  

   Vivarais 
  (Ardeche), 
  volcanic 
  geology 
  of 
  the, 
  1. 
  

  

  w 
  

  

  Water, 
  dynamical 
  equivalent 
  of 
  temperature 
  in 
  liquid, 
  and 
  the 
  specific 
  heat 
  of 
  atmospheric 
  air 
  and 
  

   steam, 
  191. 
  On 
  the 
  computation 
  of 
  the 
  specific 
  heat 
  of 
  liquid 
  water 
  at 
  various 
  temperatures, 
  

   from 
  the 
  experiments 
  of 
  M. 
  Regnault, 
  441. 
  

  

  Wilson 
  (George), 
  M.D. 
  On 
  two 
  new 
  processes 
  for 
  the 
  detection 
  of 
  fluorine 
  when 
  accompanied 
  by 
  

   silica, 
  and 
  on 
  the 
  presence 
  of 
  fluorine 
  in 
  granite, 
  trap, 
  and 
  other 
  igneous 
  rocks, 
  and 
  in 
  the 
  ashes 
  

   of 
  recent 
  and 
  fossil 
  plants, 
  483. 
  On 
  nitric 
  acid 
  as 
  a 
  source 
  of 
  the 
  nitrogen 
  found 
  in 
  plants, 
  591. 
  

  

  Wind, 
  on 
  a 
  necessary 
  correction 
  to 
  the 
  observed 
  height 
  of 
  the 
  barometer 
  depending 
  upon 
  the 
  force 
  

   of 
  the, 
  377- 
  

  

  z 
  

  

  Zodiacal 
  Light, 
  contributions 
  to 
  a 
  knowledge 
  of 
  the 
  phenomena 
  of, 
  489. 
  

  

  END 
  OF 
  VOLUME 
  TWENTIETH. 
  

  

  Keill 
  & 
  Co., 
  Printers, 
  Edinburgh. 
  

  

  