Dr. Burnett's Reviews and Abstracts in Anatomy, etc. 251 
(Vaccinium vacitlans and Gaylussacia resinosa). Mr. Stauf- 
fer’s specimens are accompanied by a neat drawing, illustrating 
the mode of attachment. This I would gladly forward for the 
engraver: but it will suffice, perhaps, for the present to say, that 
the attachment is similar to that so clearly exhibited by Mr. Mit- 
ten, in the plate which accompanies his article; only that the 
rootlets in Comandra arise from subterannean stems, and the 
suckers so far as [ have examined, do not appear to penetrate the 
foster root deeper than the surface of its wood. 
Since the above was written and in type, I have received from 
Mr. Stauffer the announcement of his discovery of the parasitism 
of Gerardia flava, accompanied by a drawing which exhibits it, 
and a specimen which plainly shows the attachment. The 
numerous branches of the root are not only attached by discs or 
suckers to the bark of the root of the foster plant (in this case 
either white oak or witch hazel,) but also are implanted upon 
each other, forming parasitical anastomoses. I trust that Mr. 
Stauffer will continue these researches, and will publish the 
results, illustrated by his drawings. 
Arr. XXVIIL.—Reviews and Abstracts in Anatomy and Physi- 
ology ; by Dr. Wauvo I. Burnert. 
I. Anatomy of the Nervous System of Rana pipiens. By JEFFRIES 
Wyman, M.D. Smithsonian Contributions to Knowledge. pp. 91, 
- 2 plates. March, 1853. 
only when resting on full and complete data. — 
: an’s memoir contains many entirely new anatomi- 
cal details, and is replete with sound, philosophical remarks on 
the homological and other relations of the vertebrate nervous 
centres, 
Where there is so much worthy of special notice, we must be 
content to indicate a few of the principal features. _ 
After pointing out some of the anatomical relations of the 
olfactory lobes, Prof. Wyman remarks : ; a 
“A condition of things rarely met with, perhaps only in a few 
Anourous Batrachians, is the fusion of the right and left olfactory 
