description of a few of the most beautiful flowers belonging to those families which are too difficult for the child properly to analyze. Thus, Arethusa, Cypripedium, Pogonia, Calopogon, Spiranthes, Festuca, Osmunda, Onoclea, Lycopodium, Polytrichum, Bryum, Marchantia, Usnea, Parmelia, Cladonia, Agaricus, Chondrus, and perhaps a few other genera, furnish plants so familiar and so striking that a child will be sure to inquire concerning them, and a general description could easily be framed in a few words which could not mislead him concerning them. In writing for children, Dr. Gray seems to have put on a new nature, in which we have a much fuller sympathy with him than we have ever had in reading his larger books. We do not like that cold English common sense which seems reluctant to admit any truth in the higher regions of thought; and we confess, that, until we had read this little child's book, "How Plants Grow," we had always suspected Dr. Gray of leaning towards that old error, so finely exposed by Agassiz in zoölogy, of considering genera, families, etc., as divisions made by human skill, for human convenience,--instead of as divisions belonging to the Creator's plan, as yet but partially understood by human students. We hope that the appearance of this masterly little book, so finely adapted to the child's understanding, may have the effect of introducing botany into the common schools. The natural taste of children for flowers indicates clearly the propriety and utility of giving them lessons upon botany in their earliest years. Go into any of our New England country-schools at this season of the year, and you will find a bouquet of wild flowers on the teacher's desk. Take it up and separate it,--show each flower to the school, tell its name, and its relationship to other and more familiar cultivated flowers, the characteristic sensible properties of its family, etc.,--and you will find the younger scholars your most attentive listeners. And if any practical man ask, What is the use of the younger scholars learning anything about wild flowers, which the cultivation of the country may soon render extinct, and which are but weeds at best?--there are two sufficient answers ready: first, that all truth is divine, and that the workmanship of infinite skill is beautiful and worthy of the eyes which may behold it; secondly, that no mental discipline is better adapted for the young mind than this learning how to distinguish plants. No more striking deficiency is observable, in most men, than the lack of a power to observe closely and with accuracy. The general inaccuracy of testimony, usually ascribed to inaccuracy of memory, is in fact to be attributed to inaccuracy of observation. In like manner, a large proportion of popular errors of judgment spring from an imperfect perception of the data on which the true conclusions should be founded. The best remedy for this lack of clear perceptions