Comprises proof sheets of various editions of the following works: 'On the fertilisation of orchids by insects';
'The movement and habits of climbing plants';
'The descent of man';
'The expression of the emotions in man and animals';
'Insectivorous plants';
'The effects of cross and self fertilisation in the vegetable kingdom';
'The different forms of flowers on plants of the same species';
'The power of movement in plants';
'On the origin of the species' (sixth edition);
'The variation of animals and plants under domestication';
'The formation of vegetable mould through the action of worms';
'Erasmus Darwin' by Ernst Krause.