With a view of facilitating the work of the compositions & proof-readers in your report on the Radiolaria it is proposed to give them such a slip as the enclosed. The lower portion has been taken from „Nature” where a draft of your classification occurred; but as you have probably made same changes once it appeared there I now || send it to ask you to be good enough to correct it for us, after which we will have a number of copies printed & give one to each person engaged upon the work.