Show MAGAZINES MAGA HOW TH THE I 1 BLOOD DEFENDS THE BODY recent laboratory research on the blood and on the properties through vilich it defends tho the body against the invasion of 0 bacterial diseases ha haa opened up a 11 freij wid rich in present information and richer stul still in its promise for the future this work becan became rio possible through gil the discovery of the microscope by means ot of which the apparently fluid blood wag found to bo be billel with floating hat flat circular i discs or 0 a v color CO lor SO ba minute are titio discs that it takes thirty two hundred of the them placed ni ill bf a 0 straight linot fineto p cover cover I 1 the span ap 01 an all inch in iii ghie rop of bao 0 d there are ma many ny millions of 0 these cells or corpuscle corpuscles corpus cles s it Is a fascinating thing to study the circulation of the blood through the capillary vessels by means of the microscope tho the capillary circulation t through the web of a fogs foot affords the best and easiest test example as the web can be stretched so thin that light la Is easily trans transmitted mittel through it the capillary vessels themselves are so minute in size as a to bo be invisible to the naked eye under a bierc scope of mo debato power they not only become visible but we can now dasting distinguish passing through thern them a coast constant ant procession of blood colls cells or corpuscles corpus cles most of these cells are arc of the circular disc variety already mentioned these are the so called rod colls calls or cor muscles of the blood occasionally a col of another variety will be seen it Is listher egther in color than the red cell granular in structure turey and in it is seen a central jense dense portion known as the nucleus it Is observed that these cells keep close to t the no vessel wall that they move more slowly E than ifon the current of red cells and that they have a certain power of independent pendent mo movement ement as well as tho the power to change in shape shap e now and inen ilen we see one of these cells stop altogether and ana adhere to the side of the blood vessel As we watch we see sec that the cell is changing in shape the narrow protruding portion pushes its way through the capillary wall vall and in a short time the entire cell has flowed into the tissues tissue s out our eile eble from how the blood defends C the e body september technical world magazine |