My wife, who is loath to strike you from her books, begs you to make allowances for the people here, who were so very cocky at having caught two such ineffable scamps as Mason and Slidell, whom we have reason to hate with perfect hatred; that they thought of nothing else, and did not mean to be saucy to England. But you have made us sore, there is no denying it. We did not allow enough for longitude. Her former message did not refer to Boott (though he is unfortunately influenced by longitude; but is a Yankee born), nor to Hooker, who, Gallio fashion, cares for none of these things; thinks us unwise for fighting, I presume; but we perfectly agree to say nothing about such matters. It is odd that you all fail to appreciate that it is simply a struggle for existence on our part, and that men will persist in thinking their existence of some consequence to themselves, though you prove the contrary ever so plain; and will strike or grasp or kick, right and left, in an undignified way sometimes; which the safe and sound bystander, coolly looking on, may not appreciate, not sharing his feelings, telling him the world will get on quite as well without him; yet he somehow does not quite like it. March 6. I have your note of February 16, about Melastomaceæ. The test of a good theory is said to be its power of predicting. If your speculations lead you to predict the style curved to one side in Melastomaceæ, and the prediction is verified, that will be a great matter in your favor. Why, you are coming out so strong in final causes that they should make a D. D. of you at Cambridge! I shall be pleased if I can help you about Rhexia. R. Virginica grows not far from here, and I will set to watching it next summer. But I fear it may not help you, as it is stated in our “Flora of North America” to have “anthers uniform.” I see, however, the phrase, “style somewhat declined,” in the character; which must be looked to. The character was drawn wholly from dried specimens. I have good details from fresh ones drawn by Mr. Sprague, but cannot just now lay hands on them. Freely point out anything else you want looked at. I have now a very zealous pupil, who will be glad to be intrusted with looking up plants and observing. Ever yours, cordially, ASA GRAY. There is some jolly science in the “Saturday Review,” now and then; as in December 28, p. 665, where we are informed that icebergs “are formed by the splashing of the waves on the coast of Labrador.” Mill being “the greatest logician in England,” I send you an American reprint of a specimen of his logic, which I know you will like. We are very sad here at the death of the president of our university,[51] who had also many warm friends in England. March 31.