But all these operations render the metals harder, and detract from their plasticity.
The shades which distinguish these three forms are not without significance, but they in no way detract from the contractual character of concordats.
In order of time the Peredur probably ranks latest in the series of Perceval romances, which, however, does not detract from its interest as a possible representative of genuine Welsh traditions, unknown to other writers.
Perhaps it may be sufficient to remark that the defects in question certainly exist, and detract to some extent from the authority of the work, more especially of those parts of it which deal with remoter periods, and were taken by Herodotus on trust from his informants, but that they only slightly affect the portions which treat of later times and form the special subject of his history.
The fungus, Sorosporium scabies, which is the cause of the scab, does not penetrate into the flesh of the tuber, nor detract from its edible properties.
Traces of quinidine are also sometimes, though rarely, found in commercial quinine, but its presence does not detract in a medicinal point of view from the value of the latter.
Dr Ferriar, in his Illustrations of Sterne (published in 1798), pointed out several unacknowledged plagiarisms from Rabelais, Burton and others; but it is only fair to the critic to say that he was fully aware that they were only plagiarisms of material, and do not detract in the slightest from Sterne's reputation as one of the greatest of literary artists.
A few summits in the extreme south-west in the neighbourhood of Cape Ghir still exceed 11,000 ft., and although the steadily rising ground from the coast and the prominence of nearer summits detract from the apparent height, this is on an average greater than that of the European Alps.
The chief work of Severus is the Chronica (c. 403), a summary of sacred history from the beginning of the world to his own times, with the omission of the events recorded in the Gospels and the Acts, "lest the form of his brief work should detract from the honour due to those events."