534 
that after 3 years only 15 specimens remained. These he took 
care of and budded on Prunus spinosa, but some peculiar 
disease came and killed them one after the other. It was bark 
rot, he said, that formed a blak ring right around the little 
trunk close to the ground. Now he is hunting for peaches from 
the northernmost limits and at the same time has made hybrids 
between Amygdalus hybrida and Elberta peaches and others. The 
plants he obtained are 2 years old now and resemble Amygdalus 
nana more than A. persica; the fruits, however, may be dif- 
ferent. I was not shown these little trees, for they were 
covered up, being too valuable to be left unprotected. 
Mr. Mijurin further has hybridized pears extensively and 
seems to have obtained some really important forms, able to 
stand much more cold than the ordinary types. 
In apples I also noticed many hybrids , not only Malus 
sylvestris x M. prunifolia, but also M. sylvestrls x M. med- 
wietzkyana and with M. baccata. Some seem to be good, but the 
greater part are of course valueless. The M. medwietzkyana 
hybrids were interesting, as half of them were red-wooded and 
half white-wooded and one specimen was half red and half 
white. Then there were hybrids between Prunus prostrata and 
P. spinosa; between P. insititia and P. chamaecerasus , between 
P. domestica and P. spinosa and various crosses between all 
these species. 
I also heard that Amygdalus davidiana freezes in Kozlov 
and also Prunus sibirica from Nertchensk! This last informa- 
tion came as a shock to me, for who would expect a plant from 
the Transbaikal territory to be tender in Central Russia? 
Nearly all plants from Manchuria also freeze in Kozlov, it 
isn't the wood that gets hurt, no, it is the young growth 
which gets caught by the late spring frosts and from which 
these Manchurian plants never recover. 
Mr. Mijurin stated that Wladimir cherries are in little 
favor with Russian fruit growers, for they only do well in 
Wladimir and when tested in ' other regions, they decline in 
vigor and the fruits become smaller and ultimately the plants 
succmmb. If this is correct, we will have to develop types 
suited to various localites. 
Then Mr. Mijurin has been hybridizing American black- 
berries with wild Russian forms and obtained some fine forms. 
And the same with American grapes and Caucasian, and he stated 
thab he possesses a hybrid of Vitis vinifera, "Dendrelabi" x 
V. riparia, that possesses the hardiness of the last and has 
very large fruits. The state in which his garden was showed 
the observer that more work has been undertaken than profita- 
bly could be disposed of and in case some sudden accident 
should befall Mr. Mijurin most of the material would disappear 
without people knowing what it really was. Mr. Mijurin 
