154 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



Success, however, is greater with western species native to 

 Colorado, viz, Picea pungefis, P. E?igelmanni^ and Blue Douglas. 



Professor Sargent told the writer twelve years ago that at 

 the Arnold Arboretum not one ligneous species from south of 

 the Equator was hardy ; even Araucaria imbricata, the well-known 

 "Monkey Puzzle," is a poor thing so far north as the middle 

 Atlantic states. It is gratifying, however, to learn that many 

 of the spruces and a few of the firs introduced by Mr E. H. 

 Wilson from Western China are thriving at the Arboretum. 

 But it is to be deplored that of the almost innumerable 

 new species of rhododendron from that region, only the somewhat 

 insignificant P. micranthum can be grown there. Of Abies 

 nobilis Mr John Dunbar writes, "after twenty years in Western 

 New York, it is only a dense bush six to eight feet tall and 

 does not seem inclined to form a leader and become tree- 

 like " ; while the splendid firs Abies grandis, A. a?nabilis^ and 

 A. niag7iifica are not even mentioned by him. He speaks 

 highly of Pinus monfana, which he calls the " Mugho Pine," 

 a tree we rather despise. One of the few palpable errors in 

 the book is his statement that Cedrus Libani is " a native on 

 the Lebanon Mountains and in Northern Africa." It is to 

 be hoped that some day an arboretum will be established on 

 the Pacific Coast, perhaps in a sheltered valley of Southern 

 Oregon, where a greater number of conifers and broad-leaved 

 species are likely to flourish than anywhere else in the world. 

 We read on page 120 that Araucaria excelsa, the "Norfolk 

 Island Pine," a plant to be seen in a pot through the bay window 

 of many a British villa, actually attained the height of 75 or more 

 feet at Los Angeles but was killed by the frosts of 191 3 and 

 1922. 



The nomenclature adopted throughout the book conforms 

 strictly to the Vienna rules. To us it is a little disconcerting 

 to see the names Abies alba used for A. pectinata^ Picea glauca 

 for P. alba^ Larix decidua for Z. europaea, Larix Kaemferi for 

 Z. leptolepis, Pseudolarix amabilis for P. Kaemferi, Pinus Mugics 

 for P. 7no9itana, and Pinus nigra for P. Austriaca, P. Laricio 

 and P. leucodermis which are regarded as varieties of that 

 species. 



The pests described in chapter iv., which deals with harm- 

 ful insects and fungoid diseases, seem in North-east America 

 to be even more mischievous than here. The gipsy moth 



