Show by WILFRED YOURSELF T GRENFELL and YOUR BODY THE OVERALLS 0 0 0 0 bec tion 0 N swig of ETC atso ALSO fibrous WS ibe au orr OM siba fice or OP SKIN K ro rort pa rs HEN all the machines are WHEN packed away in the framework we must have a covering and it must be suitable for our own work thus a fishs fichs outside must be smooth and greasy creasy to oil along through water a rhinoceros must be heavily armored tor for protection a birds very light and yet warm so feathers are besta best a polar bears very tough and heavy and so it 1 to covered with fur ours should first of all be very elastic very strong and very sensitive to warn all the machines inside of any danger dont you think our skins are the most beautiful in the world look at the softness at the colors at the elasticity and how every particle Is alive you hear bear people talk sometimes of others having two skins that Is not so the truth Is that on the top surface the cells die on purpose to protect the others and then of course they wear out and fall off and more go EO on doing the same it Is like laying down your life for your friends see picture beneath them comes the layer we will call tile alie volunteers they are arranging themselves to die in long ranks lying sideways so as to cover more surface the busy crowd out of which they come that lives around and among a lot of hillocks Is nicely molded in mounds of tough fibers and these are burrowed through and through with food pipes to feed the crowds in some are hidden guardsmen guardsman guards men like the touch machines bod and cold and heat and pain detectors who are there to protect the whole body of course our skin must be watertight and so 0 o it Is water wont soak through and wont carry in poisons medicines dissolved in fats however can be forced through gli enough to kill you yon thus belladonna mixed in an ointment kills the pain and itch of fly bites but some of it also sinks in and paralyzes the eye muscles and makes the great large black pupils that actresses love so 80 much to have our skin akin besides being our armor jias ban to help hell greatly to keep the whole body machine always at the same temperature to do that it has the cleverest dodges you yon ever saw first of all it has a great many deny little factories for making wax these glands tire are always putting out a little wax on the skin to keep the r surface supple especially in hot weather but sup poke it suddenly gets very cold well there Is a little muscle round the gland that immediately squeezes out some extra wax other muscles that bunch the skin up together and make it thicker others that squeeze the hot pipes in the surface and so save eave heat beat being lost the kin ikin has become therefore white and thick and waxy we call it goose skin but it saves it a whole heap of heat beat these little factories are most numerous on our face because it Is always exposed if their openings get choked they make spots on our skin and we steam tile the part in hot water and so help to move the block along then there Is the hilly hair which Is part of the skin we dont need it for warmth like a bear or a beaver because we can make clothes and fires put cut it does help to make us beautiful next nert vie the skin carries factories gt ast rid of 0 water those are to help to regulate the lb beat if you nil fill a basin with water and stand it outside on thick straw on a warm night in india the evaporation Is so rapid and takes so much heat to evaporate it that ice will form in the bowl water evaporates all the time all over our surface but there are two and one halt half millions of little reserve fountains all over our body ready to turn on to wet the skin shin and cool it down as soon as its heat rises even half a degree sit quite still in a very hot room and as soon as ever your whole machine Is one halt half of one degree hotter than usual the fountains begin to play and little streams run down all over your body and add start evaporating and we call it sN sweating eating of course it la Is just the same thing if you work or play very hard you have then to burn up ap a heap of fuel in all the muscle machines and the whole body would soon he be in a fever but the fountains all start going and the whole machine keeps just the same heat each person uses up about two plots pints of water a day in this way but in a hard football match two pints PILO are lost in an hour there Is one important thing to remember here clothes dont ever make us warm they only keep in tile the heat we make in a still hot lecture room full of people the water evaporates and makes a real cloud and then all the lot hot breath they breathe out gets held down and they get sleepy and headachy start a fan going blow away the cloud stir up the air and they all begin listening attentively to the sermon again practically no carbons come off through our skins the oxy axy gens cant pull them through we have spoken of the rp aroy ny arrangements range ments in the skin for signaling danger in the world of live cells that make up this thin marvellous marcellous marv ellous covering are many detectives the senst sensitive hairs and touch cells and pain cells and cold cells and heat cells are among the number these are arranged especially on all the vantage posts like the lips at the entrance to the food canal or the fingers that hit bit up against everything and can feel everywhere and especially the cells in the armpits arm pits where the big vessels lie ile As I 1 told you the outside cells of the skin are really tiles or scales filled with horny stuff like the great horns of a deer that tire are made new each year so are our outermost scales growing anew all the while that Is how bow our skins mend their own holes when we wear out I 1 auy any part like we do our socks the nails are part of our skins and are growing all the time as you know they are to pick up small things with and make our fingers much more useful ilot hot water on the skin makes it red because it enlarges the red blood vessels in it cold cola water makes it white because it makes the muscles squeeze all tile the blood out it Is often very good to dip your skin first into hot and then into cold water it helps to keep it nourished and healthy so go always end your hot water bath with a cold sponging to take a good C cold of dip every morning Is a very benell caal thing enough said off oft you go 90 and your skins biting before bed a by the th doti yai oat ft lu |