Untitled

Nelson Evening Mail, Volume III, Issue 33, 10 February 1868, Page 3

The Great Lincolnshire Ploughing Match for Spalding and Deeping Fen came off yesterday. Eight competitors entered the lists ; among them was the formidable crack man James Barker,, sent by Messrs. Ransomes. A young Lincolnshire farmer, J. Creasy, had pluck enough to put in an appearance, and with a Howard's plough made such splendid work that the Ipswich champion was completely distanced. At the Great Somersetshire Meeting on the previous day, a local ploughman, W. Kingston, in the class Open to all England, also with a Bedford plough, carried off the silver cup. —Morning Star, Oct. 12, 1867. Photography is now being applied lo the registration of the pulsations of the heart aud arteries, a purpose eminently useful to the physician. The apparatus employed consists of a glass tube, that afc one end is widened out into a cone, the base of which is closed with a thin membrane of vulcanised india-rubber. The upper extremity of the tube is inserted ia the slit formed in a division placed in a small camera about its middle and at right angles to its length ; the slit being capable of being closed or opened at pleasure, by means of a small moveable screen. The sensitized plate is made to move with a regulated speed by clockwork. When aa experiment has to be made, so much mercury is placed in the tube that it will rise to some portion of the slit, within the camera; and the membrane is laid on the heart or the artery the pulsations of which are to be recorded, Every pulsation disturbs the level of the mercury in the upper part of the tube ; and as light can pass to the sensitive plant only through the tube, a picture having an undulating lower margin is formed. The sensitized plate moves at the rate of one centimetre per second ; but the effect is magnified so that the curve representing it {has an extent of fifteen centimetres. The rate and energy of the pulsations of the heart or of any artery is in this way accurately and satisfactorily recorded.