Writing on vegetable physiology.

Nothing in CD’s life has ever interested him more than the fertilisation of such plants as Primula and Lythrum.

Thanks CD for his efforts to get HM’s book, Die Befruchtung der Blumen [1873], translated into English. [See Fertilisation of flowers, translated by D’Arcy W. Thompson, preface by C. Darwin (1883).]

Will soon return to his observations on insects in general and bees in particular.