British Association for the Advancement of Stiencé. 311 
ing on the comparative development of parts of one circle. © 3. 
Anomalous transformations of organs.. 4. Monstrous. exuberances 
of growth, by which the number of parts is altered independently 
of transformation, the number of circles of parts is increased or 
the axis: ‘irregularly extended. 5. Anomalous abortions or mip 
pressions of parts usually.present in the species. 
Mr. T. P. Teale read a paper on the G'emmiferous bodies and 
Vermiform Filaments of Actinia. He stated that as great differ- _ 
ences of opinion existed among zoologists, as to the nattire of the 
gemmiform bodies and vermiform appendages of Actinie, he had 
undertaken their investigation. Some general remarks on’ the 
structure of the Actiniz were premised, the author pointing out, 
by means of a large diagram, the various directions of the muscu- 
lar septa, some lining the cavity and supporting the stomach of the 
animal, whilst others, more delicate, terminate in a mesentery, 
supporting the gemmiferous bodies (about 200 in number) or what 
has been erroneously called the ovary. The vermiform filaments 
-are attached by a delicate mesentery to the internal body of each 
gemmiferous body. Many more valuable and curious details are~ 
given, for which we have no room. 
__A paper was read by Capt. J. E. Cook, R. N,, on the genera 
. Pinus and Abies, not less than 70 apres of which had lately been 
introduced into England. 
‘Hope read a paper entitled 29 Remarks on the. modem 
‘ ddussification of Insects.” 
Mr. G. B. Sowerby laid before the Section specimens 3 af En- 
crinus moniliformis, displaying various monstrosities of form. 
__A paper was read by Mr. Arthur Strickland on the Ardea alba, — 
a bird which is unquestionably an oecasional visiter in ‘Eppland, 
Prof. Ehrenberg addressed the meeting in French, and exhib- 
ited the first volume of his great work on. microscopie forms of 
life. He submitted to the inspection of the members a bottle of © 
the material collected in quantity in the vicinity of lake Lett- 
nagesjon, in Sweden, which the inhabitants call Bergmehl, or 
mountain meal. ‘This earth, which resembles fine flour, has long 
been celebrated for its nutritious qualities, and was found to be 
entirely composed of the shells of microscopic animalcules. Prof. 
Jones engaged in an oral discussion with Prof. E. concerning the 
~ Structure of the polygastric infusoria. 
