10 BOTANICAL GAZETTE. [ Jan. 
TO DR. ASA GRAY. 
November 18th, 1810-1885, 
Over the earth is reachless, living Pe 
In flaming marvels that de fy the sig 
Under the — are brilliant inings, but dead; 
Who toil a g them are igi 
The orld of g 
That oves bet iWesitis 
With sweets and alo ors, flowering turf and height— 
Comes ¢ ty Bede health and beauty as with bread, 
ae eas ondly, foot and hand and ben 
Till we are ated and healed as vail as fed 
The child, the feeble, and the lusty man, 
Each finds a mother in the green earth’s ‘plan, 
Thou who art wise with searching all her looks, 
books ; 
H es 
Into thine own, as bless their native nooks. 
Ferns, grasses, ancient trees of might y mould 
Whose mazy roots run deep, whose aim is bald, 
Their varied forces in thy life have told; 
For, while int ent on flower or tree or sod, 
Thy soul’s full eye hath been "Leela to God. 
ARLOTTE Fiske BATES. 
The Pollen-spore of Tradescantia Virginica L. 
~~ 
BY JOHN M. COULTER AND J. N. ROSE. 
(WITH PLATE I.) 
The pollen-spores of Tradescantia Virginica are exception- 
ally favorable for study. With the simplest appliances, and with 
few staining reagents, both nuclei can be demonstrated, the de- 
velopment of the pollen-tube can be watched, and the descent of 
the nuclei plainly followed. We have not been able to consult 
Hartig’s paper,’ in which is recorded the original discovery of 
two nuclei in pollen-spores, among which he includes those of 
Tradescantia, but the general facts pertaining to the subject are 
well presented in the works of Strasburger and Sachs, and re- 
cently summarized in this prt by Goodale. In fact, to Stras- 
burger is due most of our knowledge of this interesting subject, 
his latest views being presented in the first part of his Neue Un- 
Q Karsten’s Botan. Untersuch. ili. 1866. 
