Lewis carroll

Monday

Dot Wordsworth

The rational meaning of ‘surd’

Lewis Carroll, in his Phantasmagoria, and Other Poems (1869), constructed a poem that yielded a double acrostic, with the first and last letters of 13 words that were suggested by the 13 stanzas spelling out ‘quasi-insanity commemoration’, a reference to an Oxford commemoration ball. The first stanza, which yields the word quadratic, goes: ‘Yet what are all such gaieties to me/ Whose thoughts are full of indices and surds? x2 + 7x + 53 = 11 / 3.’ What, though, is the solution to the equation? I have seen it said that there is none, unless a minus sign is placed before the 53. But then it wouldn’t scan, and Lewis Carroll liked regular scansion: 11 / 3 is to be pronounced ‘eleven thirds’, not ‘eleven over three’.

surd

Thursday

Dot Wordsworth

The difference between ‘sliver’ and ‘slither’ is a piece of cake

From our UK edition

When people say a slither of cake, do they not remember that snakes slither? ‘Slither slide; sliver small piece,’ says the Guardian style guide. ‘Writers often get this wrong.’ True. The Guardian’s sport pages recently wondered what could give ‘Man United the faintest slither of hope’. All the papers do it. I got Veronica to make one of those word-searches of a newspaper database and, of the eight occurrences of slither in British nationals in a month, only four were of the serpentine kind. Half were the erroneous spelling of sliver. To complicate matters, there is a popular way of speaking at the moment that makes no distinction between th and v.