e._, to the makers,
vendors, brokers, and purchasers of that material, as well as to all
makers and users of acetylene generating plant. The regulations of the
British Association do not, however, give details of the method which the
analyst should pursue in determining the yield of acetylene; and while
this may to a certain extent be advantageously left to the discretion of
the competent analyst, it is desirable that the results of the experience
already won by those who have had special opportunities for practising
this branch of analytical work should be embodied in a set of directions
for the analysis of carbide, which may be followed in all ordinary
analyses of that material. By the adoption of such a set of directions as
a provisional standard method, disputes as to the quantity of carbide
will be avoided, while it will still be open to the competent analyst to
modify the method of procedure to meet the requirements of special cases.
It would certainly be unadvisable in the present state of our analytical
methods to accept any hard and fast of rules for analysis for determining
the quality of carbide, but it is nevertheless well to have the best of
existing methods codified for the guidance of analysts.
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