1893.] 



THE MICROSCOPE. 



IT 



List of Walter White's Botanical Sections and Other Ob- 

 jects Ready for Mounting or for Examination. 



By CHAS. W. SMILEY, 



WASHINGTON D. C. 



Yeast. Simple globular vege- 

 table cells, showing nucleus. 



Crown Imperial. Root L.S. 

 Protoplasm in cells 



Orchid {Oncidium) Leaf. Fi- 

 bro spiral cells, isolated 



Elder pith T.S. Pitted thin 

 walled parenchyma 



Brazil nut. Pitted and reticu- 

 late thickened parenchyma 

 cells, isolated 



Brazil nut. Prismatic cells 

 from shell, isolated 



Rush T.S. Stellate parenchy- 

 ma cells 



Rush, isolated stellate paren- 

 chyma cells 



Vegetable Ivory T.S. Thick- 

 ened unlignified albumen 

 cells. Pore canals. 



Date stone L.S. Ditto 



Coquilla nut T.S. Lignifled 

 parenchyma cells 



Coquilla nut, isolated lignifled 

 parenchyma cells 



Bullace stone, isolated lignifled 

 parenchyma cells 



Star-anise testa, isolated ligni 

 fled parenchyma cells 



Star-anise testa, surface view 

 lignifled parenchvma cells 



Walnut shell T.S. Lignifled 

 parenchvma cells 



Pear T.S. Lignifled pa 

 renchyma cells 



Pear, isolated. Lignifled paren 

 chyma cells .... 



Yew, isolated wood cells (tra 

 cheidesj. Spiral deposit 



Yew, radial wood cells (tra 

 cheides). Spiral and pits 



Cinchona bark (C. Calisayd) 

 T.S., thickened, bast cells, 

 fusiform 



Cinchona bark, isolated bast 

 cells, fusiform 



Periwinkle, isolated bast cells, 

 fusiform. Stratification of 

 cell wall 



No. Xo. 



Flax. Longfibre cells, isolated. 24 



1 Cotton. Hairs from seed vessel. 25 

 Rhubarb leaf. Spiral and an- 



2 nular vessels, isolated . . 26 

 Brake fern. Scalariform ves- 



3 sels, isolated 27 



Brake fern L.S. Scalariform 



4 vessels, sieve tubes, etc. . 28 

 Brake fern T.S. Scalariform 



vessels, sieve tubes, etc. . 29 



5 Brake fern, oblique sect. Sca- 



lariform vessels, sieve tubes, 



6 etc 30 



Maize. Annular vessels in 



7 fibrovascular bundle . . 31 

 Pumpkin L.S. Sieve tubes . 32 



S Bryony L.S. Sieve tubes . ^ 

 Bryony T.S. Sieve tubes . 34 

 Lime bark L.S. Sieve tubes. 35 



9 Mazereon L.S. Spiral and 



10 pitted tracheides .... 36 

 Phlox. Anther. Stellate tissue 



11 of mesothecium .... 37 

 Crown Imperial. Anther Fi- 



12 bro spiral tissue of mesothe- 

 cium 3S 



13 Crown Imperial. Anther T.S. 39 

 Crown Imperial. Anther. Iso- 



14 lated cells 40 



Havacinth, Anther. Fibro 



15 spiral tissue. Raphides . 41 

 White water lily, peduncle T. S. 



16 Trichlobasts in air spaces . 42 

 Water plantain, petiole T.S. 



17 Air spaces of aquatic plant . 43 

 Sowthistle stem T.S. Collen- 



18 chyma 44 



Onion. Bulb scale L.S. Lati- 



19 ciferous vessels .... 45 

 Salsify. Root L.S. Laticifer- 



20 ous vessels 46 



Euphorbium splendent. Stem 



L.S. Laticiferous vessels con- 



21 taining bone-shaped starch 

 grains 47 



22 Oak. Bark T.S. Periderm, 



etc 4S 



Red currant. Stem T.S. Phel- 



23 logen 49 



