• Darwin Archive | 'Cross and self fertilisation': portfolios, 1840s-1876 | 'Cross and self fertilisation': experimental results, [1840s]-1875 | With respect to the relative period of the germination of crossed & s[elf] fert[ilised] seeds a record was kept in only 21 cases, 1809-01-01 - 1882-04-30 | [on reverse; unrelated text], 1873-01-01 - 1882-04-30

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