The records in this notebook continue the sequence for the 1903 sweet pea experiments documented in notebook [MS Add.10161/1/5/2]. Records are numbered 238-270. A loose page of notes was inserted after [page 270]; the remainder is blank.

The general format of the record is that the parents are recorded as numbers with a superscript or sometimes as a named variety. Since sweet peas can be selfed, some crosses have only a single parent. The date of sowing and the date of planting out are recorded, together with other observations on the plants such as colour.