towards Proeneste.  The range then passed behind the Alban group, but re-appeared to the south-east as the mountain crescent of Cora and Pometia, enclosing between its horns the Pontine marshes, which lay spread out below as far as the sea line, extending east and west from Terracina in the bay of Fondi, the Volscian Anxur, to the angle of the coast where rises suddenly, between the marshes and the sea, the mountain promontory of Circeii, celebrated alike in history and in fable.  Within the space visible from this one point, the destinies of the human race were decided.  It took the Romans nearly five hundred years to vanquish and incorporate the warlike tribes who inhabited that narrow tract, but, this being accomplished, two hundred more sufficed them to complete the conquest of the world.

During the frequent and latterly prolonged residence at Avignon, Mr. Mill, carrying on his botanical propensities, had become very well acquainted with the vegetation of the district, and at the time of his death had collected a mass of notes and observations on the subject.  It is believed to have been his intention to have printed these as the foundation of a flora of Avignon.

In the slight contributions to the literature of botany made by Mr. Mill, there is nothing which gives any inkling of the great intellectual powers of their writer.  Though always clear and accurate, they are merely such notes as any working botanical collector is able to supply in abundance.  Mainly content with the pursuit as an outdoor occupation, with such an amount of home work as was necessary to determine the names and affinities of the species, Mr. Mill never penetrated deeply into the philosophy of botany, so as to take rank among those who have, like Herbert Spencer, advanced that science by original work either of experiment or generalization, or have entered into the battle-field where the great biological questions of the day are being fought over.  The writer of this notice well remembers meeting, a few years since, the (at that time) parliamentary logician, with his trousers turned up out of the mud, and armed with the tin insignia of his craft, busily occupied in the search after a marsh-loving rarity in a typical spongy wood on the clay to the north of London.

But however followed, the investigation of nature cannot fail to influence the mind in the direction of a more just appreciation of the necessity of system in arrangement, and of the principles which must regulate all attempts to express notions of system in a classification.  Traces of this are not difficult to find in Mr. Mill’s writings.  It may be safely stated, that the chapters on classification in the “Logic” would not have taken the form they have, had not the writer been a naturalist as well as a logician.  The views expressed so clearly in these chapters are chiefly founded on the actual needs experienced by the systematic botanist; and the argument is largely sustained by