1883.] On Protoplasm through the Walls of Vegetable Cells. 163 



IT. "Pelvic Characters of Thylaeoleo carnifex" By Professor 

 Owen, C.B., F.R.S., Director of the Natural History De- 

 partment, British Museum. Received April 13, 1883. 



(Abstract.) 



In this paper the author selects from a series of fossils transmitted 

 from Australia since the communication of the 1st February, 1883, 

 the pelvis of a mature Thylaeoleo, and gives results of a comparison 

 * of it with that of Macro-pus major, Felis Leo, and Dasyurus ur sinus, 

 incidentally referring to pelvic characters of the Wombat, the Koala, 

 and the Phalangers. 



The results are that the few correspondences with the Kangaroos 

 relate exclusively to a common marsupial nature ; to these, in the 

 Dasyurines, are added other resemblances not found, save in Car- 

 nivorous Marsupials ; and, finally, prominent characters are shown in 

 which Thylaeoleo exclusively repeats those presented by the pelvis of 

 Felis Leo. 



III. " On the Continuity of the Protoplasm through the W alls 

 of Vegetable Cells." By Walter Gardiner, B.A., late 

 Scholar of Clare College, Cambridge. Communicated by 

 W. T. Thiselton-Dyer, C.M.G., F.R.S. Received April 16, 

 1883. 



(Abstract.) 



After quoting a passage from Professor Sachs' " Vorlesungen iiber 

 Pflanzen-Physiologie," " every plant however highly organised is 

 fundamentally a protoplasmic body forming a connected whole, 

 which, as it grows on, is externally clothed by a cell membrane and 

 internally traversed by innumerable transverse and longitudinal walls," 

 the author suggests that any observations which demonstrate an 

 actual continuity in organs of large extent must be of interest, as 

 tending to show the truth of Sachs' statement in a sense somewhat 

 more literal than his own. At the fcime that the above remarks were 

 written, the instances of the existence of any protoplasmic continuity 

 between adjacent cells were but few, being limited to sieve tubes and 

 to Tangl's results with regard to the endosperm cells of Strychnos, 

 Phoenix, and Areca. Then came the author's investigations upon the 

 pulvini of Mimosa, Robinia, and Amicia, and subsequently to them, 

 but previous to the present communication, appeared an important 

 paper by Russow, in which he had proved that in the bast parenchyma 

 cells and the phloem ray cells of numerous plants, e.g., Populus, 



m 2 



