Attention is called in England to a list of bamboos that are hardy under cultivation there. Also to a hardy Cactus from the Rocky Mountains, Begonia from the Andes, the well-known Chamaerops excelsa, and a Mesembrianthemum acclimated in Sicily; and the Ficus repens is hardy at Kew Gardens. There is a bamboo hardy at Philadelphia, but of no great beauty.

The Power of Movement in Plants is the title of another work by Charles Darwin, assisted by Francis Darwin. It is even more interesting and curious than the previous one noticed in this column on their twining. It proves motion in the roots and leaves. In the former this gives the tip the power of avoiding difficulties of hard ground, or rather of selecting the softest course, and of going to the moistest as well as occupying any worn route. We can only indicate the importance of the book. It will be sought by those who love the study of nature, and will be found to be the most important of Darwin's botanical works.

Thinkers will be interested in an article published in Nature on Evolution and Female Education. It says, very truly, that man, by opposing the intellectual advance of woman for countless generations, has enormously injured his own advance - by inheritance. One notoriously not uncommon ground adduced is, that women already are, as a rule, somewhat inferior to men, forgetting that they were precisely made inferior by the obstacles thrown for centuries in the way of their advance, - some of these specially fixed by legal enactment. If there is one thing more certain than another it is that man can never hope to progress with satisfactory rapidity without having a sharp eye to the conditions necessary for this object, and examining all his customs to see if they are desirable or not.

W. M. C. will find the tree box the best evergreen for Philadelphia and for cities south of it.

Oak and beech leaves make the best manure for the gardener, but of course it is difficult to keep them from others. The oldest and the youngest poets speak of leaves. It is Homer who compares the generations of men to the generations of the leaves, as they come and go, flourish and decay, one succeeding the other, unresting and unceasingly. Swinburne poetises thus:

"Let the wind take the green and the grey leaf.

Cast forth without fruit upon air, The rose leaf, the vine leal, and bay leaf, Blown loose from the hair."

Old hyacinth and tulip roots, which have served their term and lived their season, may be planted in the grass, and each year they come up half-wild like the snow-drop, each year more numerous and more effective.

The Lower Animals in Health and Disease, by W. Lauder Lindsay, London and New York, we cannot altogether commend; it is careless in part and unsound. The story taken from the Animal World, that some old rats, finding a young one drowned, "wiped the tears from their fore paughs," would almost condemn any book There is, however, considerable research and some good stories, but the book will not take any good place in the literary world. It is quite too elaborate and too long for general readers.

The following is an old receipt for testing the age of eggs: Dissolve 120 grammes of salt in a litre of water. An egg put in this solution on the day it is laid will sink to the bottom; in a day old will not quite reach to the bottom of the vessel; an egg three days old will swim in the liquid, while one more than three days old will swim on the surface.

Cinchona, bark, of superior quality, is now furnished from artificial plantations in the island of Jamaica.