320 On the Meteors of 1 3th November, 1 833. 



<^. laurifolia. Very frequent on sandy soils of little fertility. Its 

 leaves are perennial. 



Q. Alba {white oak), Q. obtusiloba (Post-oak) Qfalcata (Black 



oak) are common. 



Pinus Palustris, with Quercus Catesbcei, and Q. nigra cover vast 

 tracts, some of which are very sterile, and others tolerably produc- 

 tive. In the former, the Pinus palustris is accompanied by the Q*/er- 

 cus Catesbai, and in the latter it is accompanied by Quercvs nigra. 



Pinus tceda var. heterophylla, Eh grows in the hummocks to a 

 large tree, called, in the country, " white pine," from its resemblance 

 to the northern white pine. 



Pinus variabilis grows on the Spanish old fields near Tallahassee. 



Yucca aloifolia grows on the sea-shore. Y. recurvifolia and Y. 

 flamentosa in the interior. Of the last species there is a variety pos- 

 sessing a longer and narrower leaf than the common variety* 



Heuchera amencana grows from five to eight feet high. 



Hymenopappus scabiosceus grows plentifully around Tallahassee. 



Datura Stramonium (Jamestown weed) and Verbascum thapyus 

 (Mullein) are not found except in a few places where they have been 

 lately introduced from the states. This confirms the opinion of bota- 

 nists that these plants have been introduced on the American conti- 

 nent. 



Lake Lafayette, near Tallahassee, March 1, 1S34. 





Art. VIII. — Investigations respecting the Meteors of Nov* 13th, 

 1833. — Remarks upon Prof. Olmsted 1 s theory respecting the 

 cause; by Alexander C. Twining, Civil Engineer and late 

 Tutor in Yale College. 



The writer of this article had the privilege of witnessing the me- 

 teoric display, on the morning of Nov. 13th, 1833, from a few 

 minutes past 5, by the watch, till day. Since that time, he has had 

 opportunity to collect well authenticated facts from observers in dif- 

 ferent places, and, by reflection upon the facts which he himself wit- 

 nessed and those which he has learned from other observers, has ar- 

 rived at conclusions satisfactory, in some measure, to his own mind, 

 respecting both the facts and their cause. So far as these conclu- 

 sions have coincided with those embodied in the extensive and val- 

 uable discussion of the same subject which has been given to the 

 public from the pen of Prof. Olmsted, it will not be necessary to dwell 



