Joseph White's 'Simple Rules', a Mid-Ninteenth Century Manuscript.
Quarto. 44ff. Manuscript on paper. Victorian melange paper backed marbled boards. Inscribed to FEP 'Joseph White's Book, July 15th 1861'. Amongst a wealth of purely numerical calculations under the headings 'Simple Rules' and 'Compound Rules', some 16 pages of problems are solved. Examples include: 'A man born in the year 1750 when will be 21 years of age', 'There are two numbers the least whereof is 40 their difference 14. I desire to know what is the greater number and the sum of both' and 'A hopin merchant buyts 5 bags of hobs of which the first weighed....the second....the third....the fourth....the fifth.... Besides these he purchased 2 packets each weighing....I desire to know the weight of the whole.'£ 100.00 Antiquates Ref: 9162