
212 NATURAL HISTORY MISCELLANY. 

















various Molluscs are found to contain acids, enabling them to bore in 
rocks. Pholas is known to bore into gneiss (stratified granite). 
boring worms, seiner and Sabella, which bore cavities in lim 
rocks, also contain acid. —Mr. Flower thinks there is but one species 
perm ale. y 

NATURAL HISTORY MISCELLANY. 

BOTANY.: 
Tar Lone Moss or THE Soutu (Tillandsia usneoides).—In a re 
number of the NaruraLsrt Dr. Asa Gray inquires whether this is re 
an pay, and gives some reasons for a suspicion it may probably 5 
a honcho Several times I have had fresh shapes and fastened tl 
n blocks, —dead blocks of course,—just as we do with Epiphytz, OF 
bata: and had them grow as healthily as in asa natural state. One! 
left in the Orchidæa house, at Springbrook, near Philadelphia; some J 
ago, had then been eighteen months on the block, and I belier , 
amongst the lot sold at public sale two years afterwards. Man 
sias, and allied m grow vairi as well on blocks in Orchidwa Aot 
: HOMAS MEEHAN 
In the hope of throwing some light on the question raised by F 
Gray, in the February number of the Natura.ist, I offer the foll 
facts, which fall under my daily observation, attempting, howevet, 
sar pers ion 
. The Long Moss, or Spanish Moss (Tillandsia mae 
Dady and luxuriantly on the dead branches of O pe 
oni trees, but when these dead branches fall to the one s 
KA 
ee atree near my house, which has been entirely dead a 
da a e there is a thrifty growth of this moss 
3. n find it simply hanging by a loop to a twig, or & piai 
E ot ak: and still growing vigorously. 
. On fallen trees, even on those recently cut d 
t not always, withered and dead.—D. H. Jacques, Gle 
Jacksonville, Fla. 
Loxe or Brack Moss (Tillandsia usneoides) ONLY 
Concurrent testimony from several quarters makes it ch 
does not perish on cutting down the tree that supports it, 
thrives as well on dead as on living trees. Our original a 
therefore have been mistaken.— A. GRAY. 
ANOMALOUS FLOWERS OF THE WiLLow.— There is 4 ee 
(Salix) growing near here which has for two seasons born? = 
own, I find ite 
n k 4 
AN 
ear me 
