Show I Preserve Plants and Insects in III Their Natm Natul Natmal al Colors I Two methods of preserving preservmg mdctmitely mdct mdef mdctmltely mdefinitely mltely initely in the r natural colors suchagricultural such suchagncultural suchagricultural agncultural agricultural specimens specunens as leavesflowers leaves leavesflowers leavesflowers flowers fruits seeds insects msects andother and andother andother other biolog blOlog cal c l material matenal have beendeveloped been beendeveloped beendeveloped developed by chemists of the UnitedStates Umted United UmtedStates UnitedStates States department of agneulture agriculture agneultureThe agricultureThe agricultureThe The processes while supplementmg supplementing supplementmgeach supplementingeach supplementingeach each other have different drfferent fields of ofapplicationone ofapplicationone ofapplication application-one application one - one for dried and the theother theother theother other for fresh materialIn matenalIn material matenal In the method studied by Dr DrCharles DrCharles DrCharles Charles E Sando specimens are aresuspended aresuspended aresuspended suspended and embedded in lD metha methacrylate methacrylate methacrylate crylate a crystal clear plastic slm sim slml1ar similar simliar l1ar ilar to materials matenals used in m makmg making makmgnonshatterable makingnonshatterable makingnonshatterable nonshatterable airplane alI'plane alIplane ' w ndowsIn ndows ndowsIn ndowsIn In this process the specimens mustbe must mustbe mustbe be dehydrated or dried dned out to prevent pre prevent prevent vent moisture from clouding cloudmg theglass the theglass theglass glass like plastic material Theymay They Theymay Theymay may be air dried or dehydrated byuse by byuse byuse use of alcohol or ether etherCorn etherCorn etherCorn Corn and other grains grams or seedsinsects seeds seedsmsects seedsinsects msects insects or anything that does notlose not notlose notlose lose its color or shape with dryingmay drying dryingmay dryingmay may be preserved by this mtthod method mtthodpossibly methodpossibly methodpossibly : possibly only under controlled lab laboratory laboratory laboratory oratory conditions Once the plas plastic plastic plastic tic sets it can be machined macbmed and pol polI poliahed polished I iahed hed to a high luster so that the thespecimen thespecimen thegpecimen specimen may be viewed from any anyangle anyangle anyancle angle without distortion . . The lar larg cst est mount prepared so far is an earof ear earof earof of hybrid hybnd corn cornThe cornThe cornThe The other method developed byG by byG byG G R Fcssenden Fessenden is a chemicalprocess chemical chemicalprocess chemicalprocess process for treating treatmg fresh plant matenal ma materlal material terlal terial in such a way as to toughenthe toughen toughenthe toughenthe the tissues and set the natural col color color color or The natural beauty of flowers flowersor or the exact appearance of eIther eItherhealthy eitherhealthy eitherhealthy healthy or diseased leaves can be bepreserved bepreserved bepreserved preserved by immersion unmerslOn in lD special specially specially specially ly formulated water removmg removing removmgsyrups removingsyrups removingsyrups syrups Each plant species spccles reqwres requires requiresan reqwresan an individual mdlvldual treatment which v.hlch vhlch . has hasto hasto hasto to be worked out from seven gen general general general eral types of formulasThe formulasThe formulas formulasThe The old method of preservingbotanical preservmg preserving preservmgbotamcal preservingbotanical botamcal botanical specimens specimens-pressing specimens pressing - pressing anddrying and anddrymgwas anddryingwas drymg-was drymg was drying-was drying - was unsatisfactory becauseof because of loss of color and the tact fact theywere they theywere theywere were easily easl easrl ! : ' ? destroyed by handlingor handlmgor handlmg handling or by insects mseets or mold Specimenspreserved Specimens Specimenspreserved Specimenspreserved preserved by this tills new method aresealed are aresealed aresealed sealed between bet ween sheets of cellulosefilm cellulose cellulosefilm cellulosefilm film so as to be protected fromdamage fromdamageU from fromdamage fromdamage damage damageI I U 11 ) e a to the expected permanence permanenceof of specimens preserved by either eithermethod eithermethod eithermethod method excellent records of o1 both bothhealthy bothhealthy bothhealthy healthy and abnormal plar pll1r play ts Is and 1lnd lI n : lIsects nsects lasects sects may be made aviilable aVI1i1able available for forSCientific forscientific torscientific SCientific research study studJ ' ond $ od nA ex exhIbltion exhibition exhibitioo hIbltion hibition . . |