Erasmus Alvey Darwin has rheumatism; his sisters complain of his bad temper but CD thinks him very good tempered. CD has received a new cabinet. [This is the first of six entries written in a "Memorandum book" comprising four sheets folded into a gather and sewn together in book form. The entries are in the style of letters addressed to an unnamed friend and are dated between 1 and 12 January 1822, shortly before CD’s thirteenth birthday. As they were written straight into the memorandum book, it is clear that they were never sent through the post, but were either to an imaginary recipient, or intended to be read by someone in the household, possibly CD’s youngest sister, Emily Catherine Darwin (Catherine).]