270. Miscellaneous. 
He observed that Lingula had the power of moving over the sand 
by the sliding motion of the two valves, using at the same time the 
fringes of sete, which swung promptly back and forth like a galley 
of oars, leaving a peculiar track in the sand. In the motion of the 
sete he noticed the impulse commencing from behind and running 
forward. 
Within the mantle he found a series of rows of prominent lamelle 
in which the blood rapidly cireulated—thus confirming the correct- 
ness of Vogts observations. These lamellae, however, were con- 
actile. 
The peduncle was hollow, and the blood could be seen coursing 
baek and forth in its channel. It was distinctly and regularly 
constricted or ringed, and presented a remarkably worm-like appear- 
ance ; it had layers of cireular and longitudinal muscular fibre, and 
coiled itself m numerous folds, or unwound at full length; it was 
contractile also, and would quickly jerk the body beneath the sand. 
t the most startling observation in connexion with this interesting 
animal was the fact that its blood was red. This was strongly 
marked in the gills and various sneer er of the mantle, and in 
the peduncle. At times the peduncle -a become congested ; and 
then a deep rose blush was markedly distin Mr. Morse expressed 
his gratifieation in having come to the sateen in regard to the 
annelidan characters of Brachiopods a long time previous to his ob- 
servations on Lingula. 
He then coneluded by stating that the Brachiopods, with the 
Polyzoa, should be removed from the Mollusea, and placed with the 
Artieulates among the Annelids; that the Brachiopods eame near 
the tubiculous worms, though they were much more highly cepha- 
through the homologues of the Polyzoa to that aberrant group, the 
Tunicates, as pointed out by Allman. He believed the Brachiopods 
to be a comprehensive type, exhibiting general Artieulate features, 
and forming another example of those groups belonging to the last 
that exhibit the characters of two or more classes combined. 
It was interesting in this connexion to remark that Lingula, one 
of the earliest forms created, had yet cine iar the same through all 
ages of the earth’s history —Silliman’s American Journal, July 1870. 
Our two Swallows and their Nests. By M. J. B. NovrEr. 
M. Noulet, writing from the neighbourhood of Toulouse, states 
that the two species of swallows (Hirundo rustica and H. urbica 
have not made any alteration in their mode of architecture such as 
has ge been described by M. Pouchet. 
species, H. rustica, our chimney-swallow, and the Hi- 
rovsidils of Languedoe, builds a nest which is broadly open like 
a balcony in all its free part; and = e young birds whieh occupy it 
show their heads all round the opening, especially when expecting 
the return of their parents. The nest of H. urbica, on the contrary, 
