It is, however, and remains a fixed idea with these “consistent thinkers” that the sciences of language and mind lead to superstition and hypocrisy, while on the other hand the science of language gratefully acknowledges the results of zoölogy, and only protests against encroachments. Both sciences might advance peacefully side by side, rendering aid and seeking it; and as for prejudices, there are plenty of them surviving among zoölogists as well as philologists, which must be removed _viribus unitis_. What is common to us is the love of truth and clearness, and the honest effort to learn to understand the processes of growth in mind and language, as well as in nature, in the individual (ontogenetically) as well as in the race (phylogenetically). Whether we now call this evolution or growth, philology at all events has been in advance of natural science in setting a good example, and securing recognition of the genetic method. Such men as William Humboldt, Grimm, and Bopp did not exactly belong to the dark ages, and I do not believe that they ever doubted that man is a mammal and stands at the head of the mammalia. This is no discovery of the nineteenth century. Linnæus lived in the eighteenth century and Aristotle somewhat earlier. I see that the Standard Dictionary already makes a distinction between Darwinism and Darwinianism, between the views of Darwin and those of the Darwinians, and we clearly see that in some of the most essential points these two tendencies are diametrically opposed to each other. There is one thing that naturalists could certainly learn from philologists, viz., to define their _termini technici_, and not to believe that wonders can be performed with words, if only they are spoken loud enough. The following letter comes from a naturalist, but is written in a sincere and courteous tone, and deserves to be made public. I believe that the writer and I could easily come to terms, as I have briefly indicated in my parentheses. * * * * * “ An Open Letter To Professor F. Max Müller. “RESPECTED SIR: Your correspondence in this periodical with the ‘Horseherd’ has no doubt aroused an interest on many sides. There are many more Horseherds than might be supposed; that is to say, men in all possible positions and callings, who after earnest reflection have reached a conclusion that does not essentially differ from the mode of thought of your backwoods friend.