<p style='text-align: justify;'>Laboratory notebook containing records for poultry breeding lines W 491-723 (birds hatched between March and April 1903). The notebook begins with a list of birds marked ‘Farm 4.6.1903’, followed by individual records for birds W 491-723. These include notes on colour, comb and other physical characteristics (e.g. small foot), state of health, and cause of death or whether transferred elsewhere, etc.</p>