But a little consideration will show that when the plate is reversed 180° the effects of errors of the screws produced by wear are practically eliminated.
But on account of experimental errors in weighing and measuring, and through loss of material in the transfer of substances from one vessel to another, such analyses are rarely trustworthy to more than one part in about Soo; so that small changes in weight consequent on the chemical change could not with certainty be proved or disproved.
Landolt was disposed to attribute these losses in weight to the containing vessel, which was of glass or quartz, not being absolutely impervious, but in 1908 he showed that, by making allowance for the moisture adsorbed on the vessel, the errors were both positive and negative, and were less than one in ten million.
On the 6th of May 1448 he obtained licence in mortmain and on the 10th of August founded at Oxford "for the extirpation of heresies and errors, the increase of the clerical order and the adornment of holy mother church, a perpetual hall, called Seint Marie Maudeleyn Halle, for study in the sciences of sacred theology and philosophy," to consist of a president and 50 scholars.
Modern equity, it need hardly be said, does not profess to soften the rigour of the law, or to correct the errors into which it falls by reason of its generality.