Show BENEFITS OF TREES natural friends of man treated with scant courtesy they furnish building materials material tur t ur nature ril ture implements utensils tools toole and other things in the greatest variety come forth into the light 0 of ang let lat 19 pe teach rj JI asworth rasworth REES are among athe the most common things in nature they saher ber cover or havo have covered a large pare of the earths surface that Is suitable for human life to they are tho the natural friends of 0 t man inan yet we 0 often ell aein wa with th r a c ai t courtesy and sometimes regard them as of little use if tt actual ener nivE A little study will reveal some so me of the things that trees do animals hk ail and decoir be coir larger this Is a duelo buoo the food they bat at teete also brow grow butchey buti they ent food and take it in quite a different way they live upon mineral rai batterr that le Is air water aud ad soil which they change into own substance Bub stance by gradual addition ot otnel new material trees become larger and larger each year tor for growth la Is simply the increase of a living thins la in sla size and substance sul istance trees help to tb keep the air pure for man and the lower animals how do they do this the element clement of the air that makes it it fit for breathing tr ir a gas called oxygen about one cath fth of the volume of the air Is oxy lson and at every breath animals take in some of i this oxygen and change it into carbonic add acid gas in other words the oxygen Is breathed in combines cs with the carbon in the blood end and this makes car bottle gas which la Is breathed out into the air in place of hie die oxygen taken in chere Is a ismall email am amount ou nt of car carbon onla lp add acid gas in the tha air everywhere and at all times the usual amount Is about one part in every 2500 parts of air this carbonic acid Is unfit for the tha breathing of anim alsand wherever it increases in the air even to a blight extent above the usual amount found animals cannot live lira trees and other plants prevent the tha carbonic add acid from accumulating in dangerous quantities in ordinary air they do this by absorbing this gas through their leaves it Is their principal food it makes make trees grow for a little more th than 11 on one half of the trunks and branc luja ies of every tree is carboni carbon and this all cornea comes from the carbonic add acid from lie air trees supply a large part of ull idl the fuel in the world the real wood woo ut trees its Is of little pr or no use as a fool but it does largely serve to cook fo d 1 and serve As ji protection against col colv even the coal dug from the earth a 8 well pa p the coal and gas now BO be generally used for fuel come from the vegetable matter and are largely tho the remains 0 of trees in forests that nourished before man existed on an earth trees treen give us wood and wood furnishes building material furniture implements utensils tools and other useful things in great variety wood iq one of the tha necessities of 0 life wo we are rocked in cradles made of wood when we sit elt down it to Is in clalra or be benches riches ot of wood every ever day we pit pat from wooden tables tableau the papers un unil d books that wo we read and study are printed on paper trade made from wood whenever ro re ride out it Is 13 in a wago carriage or car made largely of woid more alore ahan than one halt half of the houses in the world are built of wood and the other halt half use wood tor for doors floors and other interior parts nearly all barns are made of wood we ship our bolts vegetables and many other products in baskets barrels and crates made of wood we pack our butter and pork and buy our nalla nails and salt in aegis or barrels made of wood wood la is indispensable to our comfort and nd happiness troea trees furnish one of tho the most striking and permanent forms forma of 0 beauty what grace anat fine proper proportions what variety of expression and what unconscious dignity may be seen in a well developed tree how they atrid glorify every landscape trees laa Ip prova provo the tha climate and conservo conserve soil and water although the tha influence of frees and forests on an climate is ia not known the effect of an all too rcck lesa destruction dedor atlon la Is bo de ginning to be ba felt springs and a are failing that never failed before soil drought sare ora mote more severe and and protracted tr untimely frosts are ard more ruinous to al the alie more delicate fruits and wind storms av ars I 1 moro boro damaging than in tot flier years trees anlo sab shelb boelter and natural places placed tor mr blala birds are best allies wo we have in fighting insects but the removal ot of the forests has greatly lessened the number of insect eating birds trees furnish a groat great variety ot of miscellaneous useful products buch as fruits nuts tugar sugar honey tannin pitch turpentine dyes dyea and medicines As ad the only source ot of supply apply trees touch the welfare el tare of every man w woman oman and child but their influence goes much farther it underlies the tha great questions ofis af soil preservation and soil fertility fity the UBO ube and control of rivers and streams tho the water supply of towns town 0 und and citius in short civilization digit sa aro based barged on oa tree there la Is id no erime crime nature ha tam draws down a more certain or severe sevea punishment ment th than an that of stripping the theeart earth hof of all her trees william R lazenby Lai enby professor of for esty est 7 ohio state university ty |