MICEOSCOPICAL EXAMIXATIO^^S OF FEUITS, ETC. 



107 



In the set of drawings and photomicrographs herewith the micro- 

 scopical ciiaracteristics of the fruits examined thus far are shown as 

 far as possible. 



Fruit. 



Starch. 



Histology. 



Stone cells 



Elements of fibro-va.scular 

 bundles. 



Remarks 



Apple*... Mayor maynot 

 be present. 



Pear ^' Rarely present . 



Quince ' 



None found at 

 time of pre- 

 serving. 



Peach* do 



Pluma do 



Rarely elongated 

 stone cells 

 found in fibro- 

 vascular bun- 

 dles. 



Abundant, with 

 lumen nearly 

 closed. 



Abundant; lu- 

 men about } di- 

 ameter of cells. 



Modified elon- 

 gated stone 

 cells found. 



Spiral, annular, reticulat- 

 ed, and dotted vessels; 

 occasional nearly smooth 

 bast fibers. 



Similar to above; but bast 

 fibers often intermediate 

 in form between bast and 

 stone cells. 



Very similar to apple 



Apricot*. None found None 



Many stone-like 

 cells in angles 

 of fibro-vascu- 

 lar bundles. 



None 



No spiral vessels: mostly 

 reticulated form. 



Rarely spiral vessels; many 

 greatly elongated, reticu- 

 lated forms. 



Reticulated and spiral ves- 

 vels. 



Composed entirely of spiral 

 and annular vessels. 



Pulp cells oblong, and 

 with iron perchlorid or 

 ammonia molybdate 

 give tannin reaction. 



Pulp cells vary in form 

 from globular in pulpy 

 portion to slender, 

 spindle-shaped ones in 

 vicinity of fibro-vascu- 

 lar bundles. 



Crystals in fibro-vascu- 

 lar bundles. 



Needle-like crystals; 

 many small rectangu- 

 lar cells; often bunch- 

 es of crystals attached 

 to fibro-vascular bun- 

 dles. 



a Adams's test for pulp cells: Pinkish purple. 



^^ Adams's test for pulp cells: Pinkish purple, with more of brick-red tint end color. 



