From Hermann Müller   27 November 1880

My dear Sir!

My heartiest thanks for your work “on the power of movement in plants” which you have kindly sent to me.¹ I have only read hitherto the introduction and Chap. XII and I. But this is sufficient to show the generality of the circumnutating movement in the development of plants and its paramount bearing on the origin of nearly all sorts of movements in plants, which hitherto separatedly and without connection have been studied and described.

It is with the greatest admiration that I have learned the astonishingly simple fundamental idea of your researches, your sagacious methods of experimenting and of pursuing this idea in all its consequences, the overpowering army of your careful and accurate special observations, by which any doubt about the universality of the cirumnutating movement in the vegetable Kingdom is dispersed. It is, therefore, with high enjoyment, that I will read the rest of your new admirable work, which again has opened a new and most fruitful dominion of botanical research.

Please to accept with indulgence my work on alpine flowers which in this days has been edited and which I have sent to you yesterday.²

My son resides in London since several weeks, but he is not yet acclimated there. In the next days he intends to make use of your kind offer to make your personal acquaintance³

With sincere admiration | yours | very faithfully | H. Müller.