250 
OR. MARTIN BARRY ON THE CORPUSCLES OF THE BLOOD. 
Fig. 89. Tadpole, about 5"'. Peripheral parts of several epithelium-tables, consist- 
ing of red discs, which (red discs) enter into the formation of the 
so-called ramifications of pigment (par. 118.). The central portion of 
the epithelium-tables here seen, appeared to be dividing into four parts, 
which, with a pale surrounding substance, are represented in outline 
only. From the tail. 
Fig. 90. Tadpole, about 5'". A later stage of partitions (pigment ramifications) 
such as those in fig. 89, together with an object of a deep red colour, 
and an ovum-like interior. It is a centre for the origin of new epithe- 
lium-tables. From the tail. 
Fig. 91. Tadpole, about 5^"'. Appearance presented by portions of the choroid, 
arisen in the manner described in par. 1 18, as that in which the rami- 
fications of black pigment in the epithelium of the tail have their origin. 
One of the objects is in outline. The so-called ramifications are really 
partitions ; but not represented as such in the figure, which is intended 
to show no more than their appearance on a superficial view. 
Fig. 92. Man. Objects from the surface of a furred tongue, a, (3. Outline of 
epithelium-cells. Their contents, more or less red discs, which were 
reddest the nearer they were to the nucleus, excepting that in a the 
very red nucleus was surrounded by a more pellucid space, apparently 
occupied by larger discs. In (3, the nucleus was very large ; its pellu- 
cid nucleolus measuring as much as the nucleus of a. The nucleolus 
of (3 seemed to contain pale discs, y. Outline of a mass of pale blood- 
red discs. 
Fig. 93. Tadpoles, about 5"'. Pigment of the eye, forming out of objects resembling 
corpuscles of the blood. The part marked £ is that which had become 
the blackest, a. Four young blood-corpuscles, observed, along with 
others of the same kind, in the choroid. They had probably arisen in 
a manner analogous to that giving origin to the objects at a fig. 94. 
Three of these young corpuscles are in outline. They were composed 
of discs ; and in the finished one, a pellucid nucleus was visible on one 
side. They were blood-red. (3, y. From the same part. (3 For the 
most part bright red, but approaching black in some parts. A nucleus 
visible in each,- — distinctly in (3, obscurely in y. An orifice on one 
side in the nucleus of [3. h. An object somewhat resembling (3 The 
nucleus excepted, it was blood-red. e. Part of an object of the same 
kind as Partitions between spaces, such as those occupied by h 
and s ; at first sight appearing black, but, when more closely examined, 
found to be of a reddish colour. The discs of the bright red £ and s 
undergo division, and are given off, to enter into the formation of the 
darker and blackish It appears tli^t what is seen of £ in the figure. 
