Igg EXPERIMENTAL FARMS. 



course details vary with conditions and surroundings. The Horn-fly has given no 

 trouble to speak of, this season. It began its depredations here in 1889, was bad 

 in 1890 and 1891, less so last year, and was scarcely noticed this year after July." 



With reference to the remedies above given I must mention that I have had 

 complaints from two or three, that the Kerosene emulsion did not protect the cattle 

 for a sufficient time to make it worth while to apply it. I, therefore, have experi- 

 mented to tind something more effective. The results of these experiments were 

 that, when the flies are at their worst, it is necessary to spray cattle with the 

 ordinary Kerosene emulsion every two days. Tanner's oil containing some car- 

 bolized oil, oi- oil of tar, is more lasting in its effects, but takea longer to apply and 

 requires much greater labour. 



DIVISION OF BOTANY. 



A large number of additions have been made during the year to the collection 

 of shrubs and trees in the Arboretum; many species of the following genera were 

 allotted places in their own groups in the Botanical garden, viz., the Ashes 

 (Fraxinus), the Lilacs (Syringa), the Elms (Ulmus), the Meadow Sweets 

 \Spircca), the Withe bushes ( Viburnum)^ the Poplars and Willows {Salicacece) , 

 and in addition to these, several specimens were added to other orders of plants. 

 Many plants were set out in the border for perennials, and the seeds of others were 

 sown for future transplantation. 



At present the collection of trees and shrubs in the Arboretum consists of 600 

 different species and varieties, all of which are arranged to show the individual species 

 to the greatest advantage and grouped in families. There are in nearly all cases 

 two specimens of each kind. 



Notes have been taken as to the comparative beauty of the diffei'ent varieties of 

 flowering shrubs, their hardiness at Ottawa and the dates at which they flower. 

 Herbarium specimens have also been taken to show to any one wishing to know the 

 appearance of the best and hardiest shrubs and ornamental trees before purchasing. 

 The following is a list of the orders repi'esented in the Arboretum, with the numbers 

 of species in each order : — 



Anacardiacese 9 Magnoliacea^ 1 



Anonacese .- 1 Moraceai 5 



Araliat-ese 1 Myricacese 3 



Berberidacese 12 Oleaceae 60 



Betulacese 13 Platanaccse 2 



Bignoniacese . 5 Rharanacese 6 



Caprifoliaceae 51 Rosaceas 64 



. Celastracese 9 Eutacese 2 



Composilse.... 1 Salicacese 56 



Coniferse 83 Sapindacese 34 



Cornacese 18 Saxifragacese 27 



Cupuliferse 47 Simarubacese 1 



Ebenace^e 1 Sohmacese 1 



Elseagnaceae 12 Tei-nstroemiacese 1 



Eiicacese 1 Thymelaceae 1 



Hamamelacese 2 Tiliaceas 8 



Juglandacese 9 UrticacefB 27 



Lauracese 2 Yerbenacese 1 



Leguminosse 23 



