My dear Sir

Except in the two or three earlier chapters of your book I have adopted your plan of giving every author’s name,—the others I must fill in before completion.—¹ It makes the labour very great, however, & I cannot get on so quickly as I could wish.—²

Instead of 6 sheets per noctem ³ upon which I calculated, I can only get through 3 or at most 4— Still I hope to finish Vol. I. tomorrow night, & I have now up to page 192 of Vol. 2 in rough impressions.— I shall press on as fast as I can, but the work cannot be done quickly & well, as its very nature requires that much consideration should be given to almost every paragraph.—

Believe me | Your’s very truly | W. S. Dallas.

The proofs can be managed in any way most convenient to you.—

Cha^s. Darwin Esq.