152 PROGRESS OF MICROSCOPICAL SCIENCE. 
bone.” The author adds :—“ This observation leads to somewhat dif- 
ferent conclusions from those of Steenstrup, who thought he could 
prove (from an examination of alcoholic specimens) that the eye from 
the right side passed under the frontal bone. This is evidently not 
the case here, the eye passing round it, there being only a very slight 
torsion of the frontal in this young stage. Although at first glance 
this appears so radically a different method of transfer of the eye 
from the one described above, yet if the dorsal fin had not extended 
beyond the posterior edge of the right orbit the process would have 
been the same, as is readily seen. I hope soon to give full details, 
with illustrations, of the process of transfer of the eye in its different 
stages, in a paper I am preparing on the young stages of a few of our 
bony marine fishes.” 
The Development of Alge.—This subject promises to be well con- 
sidered in the ‘Notes Algologiques, of which the first part has 
appeared in Paris by MM. Bornet and Thuret. W. G. F. says of it, 
in ‘Silliman’s Journal’ (December 1876), that “the plates of this 
fascicule are twenty-five in number, and, in point of execution, are 
unequalled by any relating to alge, excepting those which illustrated 
Thuret’s articles on zoospores amd antheridia in the ‘ Annales. The 
work is to algology what the ‘Carpologia Fungorum Selecta’ of the 
Tulasne Brothers is to fungology. The text is no less rich and com- 
plete than the plates. A general description of the reproduction 
and reproductive organs of different genera precedes the detailed 
description of the plates, which, in the present fascicule, represent 
species referred to by Bornet in his ‘ Deuxiéme Note sur les Gonidies 
des Lichens, or which were collected by Schousboe in Morocco and 
determined by Thuret. The notes are a masterly exposition of the 
reproduction in the Nostochinee and Floridee, and are so replete 
with facts that a single reading barely suffices to give a general 
notion of the contents. Particularly interesting are the description 
of the reproduction of Calothrix confervicola, and the comparative 
description of the fruit of the different genera included by older 
writers under Callithamnion. The fertilization of Polyides, similar 
to Dudresnaya, is referred to, but will probably be figured later. The 
work of Agardh is an encyclopedia in which one may find the name 
of any Floridez more easily perhaps than in any other. The work 
of Bornet and Thuret has a different object. Determination of names 
by a somewhat artificial grouping is subordinated to a true knowledge 
of the relations of alge through a study of their minute anatomy and 
development.” 
The Lymphatics of the Liver.—Dr. W. Stirling says* that Herr A. 
Budge,{ from his injection experiments, draws the following conclu- 
sions regarding the perivascular spaces of the liver. A closed system 
of lymphatics exists in the liver, and is in most intimate relation to 
the venous blood-vessels. Within the lobules there are simple lym- 
phatic sheaths around the blood-capillaries, which prevent the direct 
contact of the hepatic cells with the blood, so that any exchange 
* ‘Medical Record,’ December 15. t+ Ludwig’s ‘ Arbeiten,’ Band x. 
