A 1915 scientific monograph by W. Lawrence Balls, formerly botanist to the Egyptian government, on how raw cotton develops and how its properties arise. It covers pedigree and pure strains, plant development and branching, the structural and environmental development of the boll and lint hair, the link between lint properties and spinning, and cotton-growing in new districts. Appendices describe investigation methods (fibre length, strength, microscopy, grading) and give statistical tables of experiments on dated flowers and daily pickings at Giza, Egypt. Illustrated with plates, plant photographs, and many diagrams and charts.