Dr. Farlow, in his memoir in “Proceedings of the American Academy,” speaks of the great interest which Dr. Gray took at this time in observing tendrils and climbing plants. The glass corridor then connecting the herbarium and his study was very much occupied by climbers, and notes were constantly taken of times of revolution, etc. He says, “Dr. Gray hardly ever passed in or out of the herbarium without stroking (patting them on the back by way of encouraging them, it almost seemed) the tendrils of the climbers on the walls and porch; and on the announcement that a student had discovered another case of cross-fertilization in the garden, he would rush out bare-headed and breathless, like a schoolboy, to see the thing with his own critical eyes.” TO CHARLES DARWIN. May 7, 1866. I am so delighted to get a letter from you, written with your own hand, and to see that you can work again a little. I have no new facts about the influence of pollen on fruits, nor about influence of grafts. I have got a little plant of Bignonia capreolata growing here. I punched a lot of holes into the shady side of a lath; the tendrils thrust their ends in; also into a cornice, but did not stay; either the movement of the stem or tendril, or, at length, the shortening of the body of the tendril by coiling, which it does promptly, brought all away. I have stuck some cotton on to the lath at the proper height for the next pair of tendrils. The tendril near by stuck fast at once, and is beginning to develop the disks, and now the tendril of the other leaf has bent abruptly round, and seized the cotton with avidity. Are there any new observations I can make? The Fenian scare, we have supposed here, was mainly a plan of certain rogues here to fleece their poor countrymen and women, poor servants and working-men! Nothing more could come of it. But I sadly fear many here have enjoyed the trouble it has given and the alarm it has excited, especially among our neighbors in New Brunswick, who rather enjoyed our woes two or three years ago. Yes, slavery is thoroughly done for. We have a bad set to deal with at the South; and holding wolf by the ears is no pleasant nor hopeful occupation, as the temper of the wolf does not improve under the holding. But we shall jangle out of the difficulty in time, even with such a crooked character as our President to deal with also. Bring out the book on Variation soon. July 3. ... So there is war on the Continent; really a war “for empire,” as Lord Russell said our war was. Now our war was a simple necessity; this Continental one a crime, in which all parties participate. I wish, but do not expect, Prussia to be crushed as one result. I wish all her coast could be annexed to Denmark! However, it is no affair of ours, being on the other side of the Atlantic. And when a nation can get strength and power by robbery, it will be likely to rob. August 7.