Definition of "bulse"

[L]et me then comfort myself with the large treasure of Johnson's conversation which I have preserved for my own entertainment and that of the world, and let me exhibit what I have upon each occasion, whether more or less, whether a bulse, or only a few sparks of a diamond.

1791, James Boswell, Life of Johnson, Oxford, published 2008, page 997

bulses of diamonds and bags of guineas

1849–1861, Thomas Babington Macaulay, The History of England from the Accession of James the Second, volumes (please specify |volume=I to V), London: Longman, Brown, Green, and Longmans