126 The Ottawa Naturalist. [September 



bloomings are also recorded, as far as possible. The work entailed 

 in recording" notes on 4457 species and varieties of plants in the 

 Botanic Garden is very considerable. The data accumulated 

 every year are becoming- more and more valuable and reliable. 



In 1899 a catalogue of the trees and shrubs which had been 

 tested in the Arboretum was published conjointly by Dr. Saunders 

 and the writer, which has been received very favourably by those 

 engaged in botanical work. In this catalogue the scientific names 

 of the trees and shrubs are arranged alphabetically, and, when a 

 species or variety has a common name, this is also given. The 

 countries are named, of which the trees and shrubs a^e native, 

 also the year in which ,they were planted. In compiling this 

 work, the nomenclature and classification of the ' ' Index Kewensis" 

 and the *' Kew Guide" were adopted. The name of the species 

 or variety is printed in bold faced type, followed by the author's 

 name in small capitals. The term "Hort." indicates a garden or 

 gardener's variety. Synonyms of genera and species are printed 

 in italics. The common names given are those found in the lead- 

 ing botanical works of modern authors. 



While a large number of synonyms have been recorded, it is 

 probable that there are still included in this catalogue some which 

 are listed as species or varieties which are really synonyms. In 

 recording- the synonyms, the names given are only those under 

 which the species or varieties have been received at the Experimen- 

 tal Farm and do not include all the known synonyms in each case. 

 When the catalogue was published in 1899, the total number ot 

 species and varieties which had been under test was 3071. Of 

 these 1465 had been found hardy, 330 half hardy, 229 tender, 307 

 were winter-killed, and 740 had not been tested long enough to 

 admit of an opinion being given as to their hardiness. The differ- 

 ent degrees of hardiness were fixed as follows : Hardy, when the 

 tree or shrub had passed through one or more winters uninjured 

 or with very slight injury to the tips of the branches. Half 

 hardy, when the new wood was killed back one-fourth or one- 

 half. Tender, when the wood was killed to the snow line or to 

 the ground. 



In addition to this catalogue the writer published in his report 

 for 1897 a descriptive list of what was considered the best one 



