Show vivisection an object ileson on the movement of the heart vivisection is allowed under certain restrictions in new york state says the new york herald and that paper gives the folio wins account of dr john green curtis operation on a calf coshow his class the physiology of the hearts action b dr burtia was covered from neck to knee by a gown for protection from blood stains and as he waved his hand 6 he janitor and his young assistants he looked some ancient high priest awaiting the victim of a sacrifice the already been strapped to a frame that conformed closely to the shape of his body this was mounted on wheels to facilitate its easy movement in various directions the ether was given while the doctor talked and ka was frequently interrupted by a plaintive bah or a deep sigh bromis victim he first performed tracheotomy and then resorted to artificial respiration which was done by applying a piece of rubber hose from a stationary pair of bellows to the tracheotomy tube inserted into the animals windpipe and thus pumping in air the ether sponge beings applied to the valva of the bellows all the air animals lungs A triangular section of the ribs and cartilages carti lages and breastbone breast bone was cut away and fhe parts directly beneath from it carefully beneath was revealed the serous sac containing the heart and the roots of the great arfer iea this is known as the pericardium the professor deftly slit this open from bottom to top jdith a pair dl scissors and on opening it the heart wih its 1 appendages came to view the motion b the heart as it beat sending the fluid of life through tha system was thus shown its right side being rather darker than the the venous character of the blood passing within while the ibell arterial blood gave the i left side ils higher color i observe said the professor that the same action is taking place in both bides of eart at the same time the two ventricles contract and expand at the sanie and the long axis of the brgan shortens in systoles sy stoles and lengthens slightly in diastoles dia stoles in toles its circular fibers slightly twist iti while in diastole it untwists un twists again the circulation of the blood is best shown by the puncture of harvey this is to into the ventricles which it blood is passing into it will spurt it out jot after jet in the air after giving tho class a good chance to study the hearts movement beat the professor plunged a hollow needle or about one eighth of an inch in diameter into the loft ventricle and jet after jet camo jumping out driven by the pump like action of the organ thua was being constantly forced onward or kept in circulation by the contraction of the organ t to complete the vivisection and to bo sure th athe animal should not suffer professor and his assistants the back of the animals pd severed as hig toche tOi he base of the skull the heart ceased beating the victim TV as dead the animal had lived over an exposed and so perfect was abe skill that the H not even seem onti rall that time nor as there the slightest sign of pain |