X. MISCELLANEOUS. 599 



E. Showing mortality from bowel complaints, viz., dysentery, British 

 cholera, cholera, and diarrhoea. 



F. Mortality from diseases of the respiratory organs, viz., asthma, 

 bronchitis, pneumonia, and laryngitis. 



The curves under D, E, and F are the averages of 30 years, and the 

 deviations from the mean lines are given in per-centages above and below 

 the average. 



Prepared by Alexander Buchan, Secretary, and Dr. Arthur Mitchell, 

 Chairman of the Medico -climatological Committee, and published in the 

 Society's Journal, vol. iv., p. 187. 



2921. Diagrams, showing the mortality of British large towns. 

 No. I. shows the weekly mortality from all causes for large towns 

 of England, and No. II. for large towns in Scotland and Ireland. 

 The averages are in most cases 10 years. The weekly averages 

 are calculated at the annual rate of mortality per 1,000 of the 

 population. Scottish Meteorological Society. 



The mean annual mortality per 1,000 of the population of each town is 

 given in the left-hand margin. The red lines show the deviations from this 

 average for each week of the year. 



No. III. shows the weekly mortality from diarrhoea for large towns of 

 England, and for Edinburgh. The averages are in most cases for 10 years. 

 The weekly averages are calculated at the annual rate of mortality per 1,000 

 of population. The breadth of space coloured red shows, for each week, the 

 rate of fatality for each town. 



Prepared by Alexander Buchan, Secretary, and published in the Society's 

 Journal, vol. iv., p. 337. 



2922. Diagram, showing the steadiness of the mortality curve 

 of scarlet fever in each of the six epidemics which have occurred 

 in London from 1840 to 1874. Scottish Meteoi'ological Society. 



A. represents the per-cent. of deviation from the mean line of each week's 

 average of each of the six epidemics. The duration of each epidemic is 

 given on the left-hand margin, and its average weekly death-rate on the 

 right-haftd margin. 



B. shows the gross mortality for each year of the period, each epidemic 

 being marked by a different colour. 



By Arthur Mitchell, M.D., F.R.S.E., Chairman of the Medico-cliniato- 

 logical Committee. Published in the Society's Journal, vol. iv., p. 340. 



2923. Diagram, showing for London the relation of diarrhoea 

 to temperature. Scottish Meteorological Society. 



A. represents the mean temperature of 1859, having the hottest summer in 

 London from 1845 to 1874 ; of 1860, having the coldest summer during the 

 same period ; and of 1861, having an average summer temperature. 



B. represents the mean weekly death-rate in London from diarrhosa during 

 each of these same years, the colours of the diarrhoea curves corresponding 

 with those of the temperature curve for the same years. The weekly death- 

 rate has been calculated in each case at the annual rate of 1,000 of the 

 population. 



By Arthur Mitchell, M.D., F.R.S.E., Chairman of the Medico-climato- 

 logical Committee. 



2924. Barometric Gradients. 



Scottish Meteorological Society. 



