"Mr. Henry Hemmingway, surgeon, Dewsbury: 'When children are working where carbonic acid gas prevails, they are rendered more liable to affections of the brain and lungs. This acid prevents the blood from its proper decarbonization as it passes from the heart to the lungs. It does not get properly quit of the carbon.'—Symons, Evidence, No. 221; App. pt. i. p. 282, 1. 38.
"Mr. Uriah Bradbury, surgeon, Mirfield: 'They suffer from asthma.'—Ibid. No. 199, p. 278, 1. 58.
"Mr. J. B. Greenwood, surgeon, Cleckheaton: 'The cases which have come before me professionally have been chiefly affections of the chest and asthma, owing to the damp underfoot, and also to the dust which arises from the working of the coal.'—Ibid. No. 200, p. 279, 1. 8.
"J. Ibetson, collier, aged fifty-three, Birkenshaw: 'I have suffered from asthma, and am regularly knocked up. A collier cannot stand the work regularly. He must stop now and then, or he will be mashed up before any time.'—Ibid. No. 267, p. 292, 1. 42.
"Joseph Barker, collier, aged forty-three, Windybank Pit: 'I have a wife and two children; one of them is twenty-two years old; he is mashed up, (that is, he is asthmatical,) he has been as good a worker as ever worked in a skin.'—Scriven, Evidence, No. 14; App. pt. ii. p. 104, 1. 60.
"Mr. George Canney, surgeon, Bishop Aukland: 'Do the children suffer from early employment in the pits?' Yes, seven and eight is a very early age, and the constitution must suffer in consequence. It is injurious to be kept in one position so long, and in the dark. They go to bed when they come home, and enjoy very little air. I think there is more than the usual proportion of pulmonary complaints.'—Mitchell, Evidence, No. 97; App. pt. i. p. 154, 1. 2.
"Mr. Headlam, physician, Newcastle: 'Diseases of respiration are more common among pit-men than among others, distinctly referable to the air in which they work. The air contains a great proportion of carbonic gas, and carburetted hydrogen. These diseases of the respiratory organs arise from the breathing of these gases, principally of the carbonic acid gas.—Leifchild, Evidence, No. 499; App. pt. i. p. 67, 1. 11.
"Mr. Heath, of Newcastle, surgeon: 'More than usually liable to asthma; mostly between thirty and forty years of age. A person always working in the broken would be more liable to asthma. Asthma is of very slow growth, and it is difficult to say when it begins. Custom and habit will not diminish the evil effects, but will diminish the sensibility to these evils.'—Ibid. No. 497, p. 665, 1. 10-14.
"Matthew Blackburn, driver, fifteen years of age, Heaton Colliery: 'Has felt shortness of breath. Helps up sometimes, but is bound to drive. Cannot help up sometimes for shortness of breath. His legs often work, (ache;) his shoulders work sometimes. Working in a wet place.'—Ibid. No. 27, p. 573, 1. 34.