The cedar of Mount Atlas (_C. atlantica_) was pronounced by Sir Joseph Hooker to be, like the Indian deodar (_C. deodara_), really no more than a geographical and climatic variety of the cedar of Lebanon; but whereas the difference in habit and appearance is well marked and constant, modern classifiers have assigned each of the three specific rank. For the British planter the distinction between them is of considerable importance. The Mount Atlas cedar, which forms great forests in the mountain ranges of Morocco and Algeria at high altitudes, is far more erect in growth, and has less tendency to wide branching, than the cedar of Lebanon. The glaucous variety, with foliage of a charming silvery bloom, is one of the loveliest conifers that can be planted, provided it is raised from seed; but nothing except disappointment is prepared for those whom nurserymen supply with plants raised from cuttings or grafts, which are invariably lacking in the graceful carriage and erect habit which distinguish this species among all other cedars. There is the less excuse for propagation by these means, inasmuch as the Atlantic cedar ripens its cones in our country as freely as the Lebanon cedar, and seed gathered from glaucous parents will produce a considerable proportion of seedlings with the hereditary tint. The cedar of Mount Atlas was not introduced to England until about 1845, but there are already many handsome specimens, measuring 50 to 80 feet high. The tallest I have seen in Scotland is at Smeaton-Hepburn, in East Lothian, which was 69 feet high and 6½ feet in girth in 1902. The deodar, _C. deodara_, may be distinguished at a glance from either of the other forms of cedar by the graceful drooping of the young growth. A native of the Western Himalayas, at altitudes from 4,000 to 10,000 feet, it has not adapted itself very successfully to our mild, restless winters and cool summers, the very reverse of its native climate. It grows in its own country to an immense size, 150 to 250 feet high, and as much as 35 feet in girth, with long clean boles. Elwes records how a fallen deodar lay for at least one hundred years in one of the leased forests of the North-West before it was cut up, when it sufficed for 460 railway sleepers, narrow gauge.