BUDS 



125 



leaves are enveloped in scales. The scales keep off 

 cold air and moisture. 



We can imitate the folding of the Sycamore-leaf by 

 a paper model. Take a sheet of paper, cut it to a 

 roundish shape, and fold it along the middle. On 



FJG. 40. Cross-section of folded foliage-leaves from bud of Sycamore (two pairs). 

 Highly magnified. 



each side of the first fold make two symmetrical folds. 

 To imitate the Sycamore-leaf as closely as possible 

 the spaces between the folds must be narrow towards 

 the base, and widen out towards the tip, as in a fan. 

 When folded up tight, the paper model will have a 

 pointed base and a square end. Such a shape is not 



