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WI.
LIFE, OR MECHANISM, -WHICH!

THE FIFTY-FIRST LECTURE IN THE BOSTON MONDAY LECTURESHIP, DELIVERED IN THE PARKstreet CHURCH NOV. 6.

“TU cuncta superno Ducis ab exemplo, pulchrum pulcherimus ipse Mundum mente gerens, similique imagine formans.” BoETHIUs, De Consol., 9.

“WHAT time this world's great workmaister did cast
To make all things such as we now behold,
It seems that He before His eyes had plast
A goodly patterne, to whose perfect mould
He fashioned them as comely as He could,
That now so fair and seemly they appear;
As naught may be amended anywhere.

That wondrous patterne, wheresoeer it be,

Whether in Earth, laid up in secret store,
Or else in Heaven, that no man may it see
With sinful eyes, for fear it to defiore,
Is perfect beauty.” – SPENSER.

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Perpendicular section through thick layer of epithelium covering a papilla of the tongue, showing the bioplasm or living matter and the formed material of each elementary unit or cell. In the lower part of figure 1, the cells which are closest to the nutrient matter are seen. Here there are no Separate CELLs, but the soft formed material ferms a continuous mass. These are the youngest bioplasts, and are unitiplying in number. When the formed material has accumulated around the bioplasm to some extent the process of multiplication ceases. As the cells advance towards the surface, C. to take the place of those removed, the formed material becomes firin and dry, and the reunains of the biopiasm die, when the whole “cell” consists of lifeless formed material only. x 700 :

Bioplasm and
elastic tissue,
or formed ma-
terial. The
isioplasm is
moving in the
direction of
the arrow and
forming the
elastic tissue
as it proceeds.

Bioplasm and formed
material (contractile
tissue) of muscle.
The biopiasm is mov-
ing in the direction
indicated by the
arrow. It is now
between a and 3, but
was between 5 and r

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I)evelopment of young dark-bordered nerve fibres at a very early period, showing bioplasm and formed material of young elementary parts ind the fine fibre coiling spirally round the developing dark bordered libre. x about 1800.

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