Thanks for portrait of Louisa. Plans series of pictures of all JH's children. Margaret Brodie Herschel moved her mother [Mrs. Stewart] into new lodgings, but is now ill again. JH and London household are quarantined. No one may enter or leave. John Herschel [son of JH] is also ill, but under Mrs. Pritchard's care [at Clapham Grammar School]. Lists books and papers to be sent to JH.