inches wide,|flannel, 27 |flannel, 27 |inches wide, |inches wide, |Printers'
a full |inches wide,|inches wide,|a full |a full |cloth a full
shade. |a full |a full |scarlet. |orange. |Turkey red.
|violet. |yellow. | | |
------------+------------+------------+-------------+-------------+------------

TABLE C.[3]
-------------------------------------------------------------------------------
DYEING POWERS OF COLOURS FROM 1 LB. OF LANCASHIRE COAL.
------------+------------+------------+-------------+-------------+------------
Methyl | Naphthol Vermilline | Aurin | Alizarin
Magenta or Violet. | Yellow. or Scarlet. | (Orange). |(Turkey Red)
------------+------------+------------+-------------+-------------+------------
8 × 27 |24 × 27 |61 × 27 |41 × 27 |1·93 × 27 |4 × 27
inches of |inches of |inches of |inches of |inches of |inches of
flannel. |flannel. |flannel. |flannel. |flannel. |Printers'
| | | | |cloth.
------------+------------+------------+-------------+-------------+------------

[Footnote 3: These tables were compiled by Mr. Ivan Levinstein, of
Manchester.]

Before we go another step, I must ask and answer, therefore, a few
questions. Can we not get some little insight into the structure and
general mode of developing the leading coal-tar colours which serve as
types of whole series? I will try what can be done with the little
knowledge of chemistry we have so far accumulated. In our earlier
lectures we have learnt that water is a compound of hydrogen and oxygen,
and in its compound atom or molecule we have two atoms of hydrogen
combined with one of oxygen, symbolised as H_{2}O. We also learnt that