21.6 MICROSCOPICAL RESEARCH IN THE 



gave to the world of Nature its wondrous being, and who by these 

 withered leaves says to us — " The grass withereth, the flower 

 fadeth, but the Word of our God shall stand for ever." 



EXPLANATION OF PLATE XXXIX. 



MONOCOTYLEDOlSr. 



Fig. 1. — Germination of Indian Corn : — a, single Cotyledon ; h, 

 Rootlets. 

 ,, 2. — Diagram of Ternary Flower of Tulip : — a, Sepals ; h, Petals ; 

 c, Stamens ; d, Pistils. 



Dicotyledon. 

 ,, 3. — Germination of Bean : — a.a, Cotyledons ; h, Pootlets. 

 ,, 4. — Diagram of a Quinary Flower of Crassula : — a, Sepals; h, 

 Petals ; c, Stamens ; d, Carpels. 



Phyllotaxis. 

 ,, 5. — Two-fifth arrangement of Oak Apple, Poplar, etc. 

 ,, 6 and 7. — Transverse projections of Stems, showing Phyllotaxial 



arrangement of leaves and angular divergence. Fig. 6, one- 



third=120° ; Fig. 7, two-fifths=144°. 



flOetbob0 of flDicroscopical IReecarcb in tbc 

 Zoological Station in IRaplee. 



By C. O. Whitman. 

 From " T/ie Ainerica7i Naturalist" 



SECOND PAPER. 



(Conihiucd from page io8.) 



11. — Staining Methods. 



IT has gradually become a settled custom in the Zoological 

 Station, to mount microscopical preparations in balsam 

 wherever this .can be successfully done ; and to avoid, as 

 much as possible, the use of aqueous media, both in mounting 



