19 , 46 ) ; but this is the first description of the dwarves in my father 's writings -- already with the spelling that he maintained against the unceasing opposition of proof-readers -- and they are eminently recognisable in their dour and hidden natures , in their 'unloveliness ' ( the silmarillion p. x 113 ) , and in their 'marvellous skill with metals ' ( ibid .