352 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
also put to sprout. They all sprouted well and were planted on an 
even piece of ground side by side on April 15, 1920. They grew 
away well and were lifted half on July 3, the remainder on August 4, 
and weighed, with the following results : — 
Lifted 
Lifted 
Variety. 
Source. 
July 3. 
Twenty 
Aug. 4. 
Twenty 
Total' 
Produce. 
Tubers. 
Tubers. 
lb. 
oz. 
lb. 
oz. 
lb. 
oz. 
Epicure 
J- Dumfries seed 
\Wisley seed 
52 
32 
8 
8 
72 
41 
3 
II 
124 
74 
II 
3 
Ninety-fold . 
f Dumfries seed 
Iwisley seed 
53 
41 
4 
15 
59 
55 
5 
14 
112 
97 
9 
13 
May Queen. 
f Dumfries seed 
IWisley seed 
43 
25 
12 
I 
67 
47 
4 
3 
III 
72 
0 
4 
Arran Rose 
fDumfries seed 
IWisley seed 
31 
27 
2 
6 
42 
33 
5 
II 
73 
61 
7 
I 
Dargill Early 
f Dumfries seed 
IWisley seed 
26 
22 
13 
15 
39 
39 
10 
4 
66 
62 
7 
3 
Broad-leaved Ashleaf . 
/Dumfries seed 
IWisley seed 
40 
27 
12 
4 
47 
32 
4 
12 
88 
60 
0 
0 
The greatest importance attaches, of course, to the result of the 
July lifting while the tops were still green, and it will be at once seen 
that the three non-immune varieties are each better in cropping power 
than either of the three immune, but that of these three the ' Broad- 
leaved Ashleaf is the most promising. 'Dargill Early* was still 
green at the time of the second lifting and will probably not rank as 
one of the earliest varieties at all. The cropping qualities shown at 
the early hfting are confirmed in the second. 
The comparison of the yields given by the Dumfries seed with 
those of the Wisley seed serve to emphasize the value of Scotch seed 
over that once grown in the South, a point that is now fairly well 
known to most. 
* Broad-leaved Ashleaf ' appears therefore to be the most promising 
of the newer varieties as a first early. It is a variety of German 
origin (there called ' Jimi quite distinct in every way from 'Myatt's 
Ashleaf,' and already known by several synonyms in this country 
(see Journal R.H.S., vol. xlv. p. 364). 
In view of the steady irresistible march of wart disease it is very 
desirable that new varieties of Potatos should be raised, especially 
of very early and maincrop varieties (we are fairly well supplied with 
immune second earlies). It is possible that seeds raised from the 
crossing of late varieties would produce some early varieties, but 
probably the greatest hope of success lies in crossing early varieties 
with one another, especially early varieties of known high yielding 
qualities. Seed balls are not infrequent on some early varieties like 
* Myatt's Ashleaf,' but these are usually the result of self-polHnation, 
and better results would probably be produced by crossing carefully 
carried out. There seems no doubt that high-yielding qualities are 
transmissible, but whether immunity to wart disease is has not yet 
been ascertained. 
