Suffering from giddiness brought on by the excessive heat of their "uncommon summer"; initially treated it as proceeding from gout but found his stomach was at fault, took purgatives to counteract the threat of constipation but has observed scybala; blames his heavy work load. The heat's effect on the garden: flowers all destroyed, apricots and peaches have not swelled nor ripened, peas and beans were ready all at once and quickly too old for the table, and oats and barley cramped by the heat, though the corn is promising. The poor manufacturing people do not have work above three days a week.

Writing in response to claims made by Josef Fraunhofer, discusses the relative merits of reflecting versus refracting telescopes. Adds comments on double star observations made by JH and James South.