THE AMERICAN BOTANIST 11 



seems, to nic that with but tew exceptions their oiitstaiKhnj; 

 features is not size hut Horiferoiisness. The lar,<,a'>t \ines 

 I have ever seen were >cui)i)erniinj;' j^rape \ine> and 1 renieni- 

 her readinij: once that the lari;est vine in the world was an 

 very ancient ^rape-vine in England. Wild grapes ^row very 

 abundantlv in h'lorida the \ines sometimes co\erin,4j^ lofty 

 trees or co\erin^ small trees and shrubs so as to form im- 

 penetrable thickets. In a story [)rinted some time aj^o in a 

 boy's magazine the hero was lost in a Florida swamp and in 

 the course of his wanderings became entangled in "the sea- 

 grape-vine". This was amusing to those who know the sea 

 grape for it is not a vine at all nor even a grape but a beau- 

 tiful small maritime tree {Cuccolobiis iivifera). The fruit 

 hangs in clusters, hence the ccjmmon name. — Mr,:. II'. P. 

 Diddcll. 



OiL-GL,ANDS OF THE Lemon. — It is well known that the 

 leaves of the lemon tree {Citrus limomuni) are fragrant 

 though much less so than its flowers. To discover the seat 

 of the fragrance, a small piece of the upper epidermis was 

 put on a slide and carefully measured. It presented a sur- 

 face of 100 square millimeters. It was then transferred to a 

 microscope which revealed, as was expected, many oil dots. 

 On account of their abundance it was thought of interest to 

 know the number present in an entire leaf and they were 

 counted with great care. In this small piece there were found 

 150 dots. In another piece from another leaf 110 dots were 

 counted in an area of 70 square millimeters. In the entire 

 leaf with a surface of 2570 square millimeters, there were, 

 if e\enly distributed in it as the)' seemed ti> be, 4040 oil dots. 

 — Hdo Claasscn, Cleveland, Ohio. [In Mr. Claassen's note on 

 the number of stomata in a leaf of Urginea maritiiiia, a piece 

 of leaf 16 square miilimeters in size w'as set down as 16 mil- 

 limeters square — a very different proposition. F't>rtunately 



