﻿140 
  Mr. 
  A. 
  H. 
  Garrod 
  on 
  the 
  

  

  di 
  situazione 
  del 
  problema 
  relativo 
  alle 
  Corse 
  del 
  Cavallo 
  sopra 
  

   qualunque 
  scacehiere. 
  4to. 
  Roma 
  1872. 
  The 
  Author. 
  

  

  The 
  original 
  manuscript 
  Memorial 
  from 
  the 
  President 
  and 
  Council 
  to 
  

   G-eorge 
  III., 
  praying 
  that 
  observers 
  might 
  be 
  sent 
  out 
  to 
  observe 
  the 
  

   Transit 
  of 
  Venus 
  in 
  1769. 
  Among 
  the 
  signatures 
  are 
  : 
  — 
  Lord 
  

   Morton, 
  P.R.S., 
  Nevil 
  Maskelyne, 
  Astron. 
  Royal, 
  Gowin 
  Knight, 
  

   B. 
  Franklin. 
  

  

  Copy 
  of 
  Diploma 
  on 
  Vellum, 
  with 
  scientific 
  symbols 
  in 
  margin. 
  En- 
  

   graved 
  for 
  the 
  Society 
  during 
  the 
  Presidency 
  of 
  the 
  Earl 
  of 
  Maccles- 
  

   field, 
  temp. 
  George 
  II. 
  Presented 
  by 
  Dr. 
  Diamond 
  

  

  " 
  On 
  some 
  Points 
  connected 
  with 
  the 
  Circulation 
  of 
  the 
  Blood, 
  

   arrived 
  at 
  from 
  a 
  Study 
  of 
  the 
  Sphygmograph-Trace/' 
  By 
  

   A. 
  H. 
  Garrod, 
  B.A., 
  Fellow 
  of 
  St. 
  John's 
  College, 
  Cambridge, 
  

   Prosector 
  to 
  the 
  Zoological 
  Society. 
  Communicated 
  by 
  Dr. 
  

   Garrod, 
  F.R.S. 
  Received 
  March 
  12, 
  1874. 
  Bead 
  April 
  23* 
  

  

  [Plate 
  5.] 
  

  

  Since 
  my 
  first 
  communication 
  to 
  the 
  Royal 
  Society 
  " 
  On 
  the 
  relative 
  

   Duration 
  of 
  the 
  Component 
  Parts 
  of 
  the 
  Radial 
  Sphygmograph-Trace 
  in 
  

   Health 
  " 
  (P. 
  R. 
  S. 
  vol. 
  xviii. 
  p. 
  351), 
  it 
  has 
  not 
  been 
  my 
  good 
  fortune 
  to 
  find 
  

   any 
  similar 
  observations 
  by 
  other 
  physiologists, 
  either 
  in 
  favour 
  of 
  or 
  in 
  

   opposition 
  to 
  my 
  statements. 
  From 
  that 
  time 
  my 
  attention 
  has 
  been 
  

   continually 
  directed 
  to 
  similar 
  phenomena 
  ; 
  and 
  the 
  employment 
  of 
  

   similar 
  methods 
  has 
  led 
  to 
  results 
  which 
  seem 
  to 
  have 
  an 
  important 
  

   bearing 
  on 
  the 
  problem 
  of 
  the 
  action 
  of 
  the 
  heart. 
  It 
  is 
  evident 
  that 
  a 
  

   thorough 
  knowledge 
  of 
  the 
  nature 
  of 
  the 
  pulse 
  in 
  the 
  arteries, 
  when 
  

   combined 
  with 
  that 
  acquaintance 
  with 
  the 
  anatomical 
  mechanism 
  of 
  the 
  

   heart 
  and 
  arteries 
  that 
  can 
  be 
  arrived 
  at 
  from 
  jpost 
  mortem 
  examination, 
  

   is 
  sufficient 
  basis 
  for 
  a 
  fairly 
  thorough 
  study 
  of 
  the 
  circulation 
  of 
  the 
  

   blood. 
  It 
  has 
  been 
  my 
  endeavour, 
  by 
  the 
  employment 
  of 
  the 
  sphygmo- 
  

   graph 
  as 
  constructed 
  by 
  M. 
  Marey, 
  to 
  obtain 
  an 
  amount 
  of 
  information 
  

   from 
  the 
  curves 
  which 
  it 
  produces, 
  sufficient 
  to 
  generalize 
  on 
  the 
  nature 
  

   of 
  the 
  cardiac 
  action 
  in 
  some 
  of 
  its 
  details 
  which 
  have 
  not 
  as 
  yet 
  attracted 
  

   attention. 
  The 
  results 
  will 
  be 
  stated 
  in 
  the 
  form 
  of 
  propositions. 
  

  

  Prop. 
  I. 
  The 
  length 
  of 
  the 
  interval 
  between 
  the 
  commencement 
  of 
  the 
  

  

  * 
  See 
  Proceedings, 
  vol. 
  xxii. 
  p. 
  291. 
  

  

  