374 
NOTES AND MEMORANDA. 
cavity by a short tube. This tube rapidly widens out^ especially 
anteriorly, to such an extent that it soon appears as a shallow 
bay in the body cavity. Thus each opening at this stage forms 
a bay, wide and shallow anteriorly, becoming deeper and nar- 
rower as we pass backwards, until finally behind it is separated 
from the body cavity altogether, and there is seen in section a 
Malpighian capsule precisely resembling a developing Malpig- 
hian capsule in the hinder region of the Wolffian body.^ In this 
bay and in the small part behind continuous with the bay, but 
separated from the body cavity, which are together serially homo- 
logous with a Malpighian capsule and the funnel leading from 
it into the body cavity, a small glomerulus soon appears 
attached to the dorsal wall. The glomerulus increases in size, 
and the bay anteriorly widens out very much, while behind it 
remains deep, and finally passes into the closed posterior por- 
tion. The glomerulus fills up this passage, which clearly runs 
obliquely backwards and dorsalwards, and eventually, as far as I 
can ascertain, the opening becomes completely closed, the epi- 
thelium on the external glomerulus being no longer continued 
through the opening on to the internal glomerulus. 
The external glomerulus, then, in the chick which has hither- 
to been known as the glomerulus of the head-kidney, is nothing 
more than a series of glomeruli of primary Malpighian bodies 
projecting through the wide openings of the segmental tubes 
into the body cavity. Their extreme antero-posterior extension 
may be said to be within the ninth and thirteenth segments. 
In the chick the primary segmental tubes corresponding to 
these external glomeruli are apparently never fully developed. 
I may mention that the external glomeruli are present in 
greater numbers, and attain a greater development in the duck 
than in the chick. 
I defer the details and all discussion of this extraordinary and 
unexpected development until I am able to publish a fuller paper 
with figures. 
Bacterium Anthracis. — Professor Greenfield, of the Brown 
Institution, has recently made the following report to the 
Royal Agricultural Society : 
In my former report, published in the last volume of 
the Society’s journal, I gave the results of my experiments 
so far as they were completed to the middle of February. 
It may be remembered that the chief results of the experi- 
ments, briefly stated, were — 
(1) That splenic fever may be transmitted to a bovine 
^ Loc. cit., fig. 11. 
