She was elected as a research fellow of Somerville College but was unable to take up the position because of her planned marriage to her supervisor Robin Snow in 1930.
][5] After a trip to Jamaica in 1924, Robin Snow had acquired an undiagnosed illness associated with severe fatigue that affected his work for the rest of his life.
[2] This and their work tested the hypotheses of Hofmeister and van Iterson that new primordia would arise in the largest gaps left by previous ones, and largely relied on dissection of the growing stem of Lupinus albus under a microscope.
In all the work published by them jointly, Mary Snow carried out almost all of the practical manipulation, they shared the interpretation of the results and the generation of new experimental ideas, while Robin alone wrote them up.
[citation needed] Mary Snow's benefaction to the Oxford Botanic Gardens made possible the development of their arboretum at Nuneham Courtenay.