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142 that something of the kind does not occur somewhere in Norway. Mr. Tromholt intends to publish the year's results of these observations cartographically, with notices of associated meteorological phenomena. For the complete registration of the telegraphic perturbations, he has constructed an apparatus which graphically represents the time of their happening, their strength, and direction, which is connected during the night with a north and south telegraph line 1,400 kilometres long, while during the day telephones are used. This enterprise is assuming an extent which places its effective control beyond the power of one man. Mr. Tromholt therefore proposes that the Government establish an institute at Drontheim to become the central station of the world, to which all observers on land and sea shall transmit their reports.

Importance of the Plumber's Art.—A plea for a higher recognition of the plumber has been made by Mr. William Halley in an address before the Ohio State Sanitary Association. Of the various craftsmen who assist in constructing dwellings, there is not one, perhaps, whose position in the light of sanitary science is more important and responsible than his. In days gone by he was considered a mere worker in lead to supply the simple wants of his employer, as ignorant as himself of the physical laws of his occupation; but now his work assumes the dignity of a sanitarian's. Yet there are few vocations in which skillful work is so little appreciated as that of plumbing. People are not interested in the work because it has no reference to ornamentation, and is almost wholly out of sight. A great deal depends on the plumbing. If it is perfect, the house is healthy; if imperfect, an unhealthy habitation is the result. It is easy to see that it is the most important feature of a house, to which may be added all the convenience, beauty, and polish of a palace. But first of all, stamp it with the character of health by sanitary plumbing. Even with the best devices it is impossible to prevent sewer-gas at times. There are many accidents by which plumbing-work will become crippled and allow gas to escape. Hence it is advisable to exercise extreme care about its location and quantity. Unfortunately, for the plumber and for sanitary effect, the architect is too apt to ignore plumbing and give undue attention to other matters which serve better to display his æsthetic conception. House-drainage is made secondary and subservient to convenience and display. At the last moment it is remembered that the house must be drained, and plumbing specifications are made to fill in the cubby-holes. That is why so much plumbing is worse than useless.

Foliage-Trees in Colors.—The "Saturday Review," treating of plantations of trees, dwells upon the effects that may be produced by massing those having foliage of various hues. While every garden has its "ribbon-beds" of herbaceous foliage plants, the arrangement of trees to produce similar effects is still an undeveloped art. What can be done in this line, it says, "is well illustrated at Waddeson Manor, Baron Ferdinand dc Rothschild's place in Buckinghamshire. Nothing can be more beautiful than the treatment of foliage trees and shrubs in his ground. It is absolute painting, wherein the pigments are represented by golden yews (Taxus baccata variegata and Taxus baccata foliis variegatis), golden elders, double-yellow gorse, golden broom, purple barberry, purple hazel, copper beech, purple sycamore (which varies from green and gray to purple with every passing breeze), variegated maple introducing a lighter tinge, which is carried on by a mass of sea-buckthorn, whose pale, frosted silver is relieved by the deep, velvety green of a background of Austrian pine. What can not be done when such colors as these lie ready to hand, not to mention all the 'glaucous' trees, whose leaves are often white, covered with a silky down or powdered over with a fine dust like that on a butterfly's wing? The American maples, and especially the swamp-maple with its autumn glory of foliage, have made the 'Canadian fall' or autumn a season and object of pilgrimage from all parts of the world. The swamp maple. . . has other merits besides that of its autumn gold. In early spring the leafless branches are clothed with clusters of deep-red flowers, the young growing shoots are reddish-brown in color, and the leaves a bright, shining green above