16 
a problem, for around* here we have the following 
species permanently affected, viz., Malus rlvio - 
laris , Amelanchie r canadensis and Cratae.^us 
douglasii , but, the pear orchards as a rule never 
touch quite upon the native vegetation. 
"When v;e spo^e about budding being prefer- 
able to grafting. Prof. Reimer said that it was 
easier , quicker done , and it makes a better 
unionl One experienced man can put in 800 buds 
a day. 
"V/e went over the grounds and Prof. Reimer 
showed me most minutely which species and which 
varieties were immune or fairly so and which were 
not. Here is a list of them: 
Immune : 
Pyrus UBSuriensis , SPI ?l880, 
" variolosa (?) 
"Old Home" from Farmingdale, 111. 
Aimo s t Immune : 
P yrus calleryana from Oroville, Calif., 
" " " I Chang, China, 
"Orel No. 15" from Prof. Budd of Iowa, 
"Surprise" from Missouri, 
"Florida Sandpear". 
Semi - immune : 
Pyrus bretschneideri , 
" simonii , 
" heterophylla , 
" ovoidea , 
Japanese sandpear. (Many strains exist, 
however, some far less immune than 
others. ) 
Mop - resistant to blight : 
Pyrus amygdali folia 
" balansae 
" betulaefolia (bad) 
canescens 
cor d ata 
cotinifolia 
eleagrifolia (bad) 
fascicularis 
" glabra 
" longipes 
" michauxij, 
" nivalis (bad ) 
II 
n 
parvi folia 
" pashia Tvery bad) 
phaeocarpa 
" silicifolia (bad) 
" serrulata 
" seratina (extra bad) 
" sinaica 
December 3li 19l6. 
