356 Buysman—Sea and Continental Climates 
70° 80’. Kola, 69° 30’. Yenisei, 67°. Amur region. Petro- 
paulovsk, on Kamtschatka 
Ulmus campestris L., Dbtnbron Elm. Britain, 57°. Norway, 
cult., 63° 26’. Russia: Ilmen Lake. South of Moscow. Riazan. 
South of Kasan and Ufa to the Ural mountains. 
Tilia Europea UL. (inclusive of parvifolia, grandiflora and inter 
media), Lime Tree. Britain, 57° (parvifolia). Norway, wild, 
62°°9’; cult., 67° 56’. Petersburg. Kargopol. Ust Siissolsk, 
about 62°.  Solikamsk. Ural. mountains, about 58° 50’. 
Werchoturje. 
- Vinis vinifera L., Common Grape. Bretagne, 47° 30’. Liége, 
50° 45’. Thuringia to Silesia, 51° 55’. South Galicia. South 
Russia, between about 48° and 49°. Astrachan. Buchara in 
‘Turkestan, 40°; here the vine is rieneacea in the open fields.” 
Chiwa, 42°. China, 40°. Califor 
This plant cannot stand the eeireine cold of Asiatic con- 
tinental winter climate, and requires a very warm or a very 
long summer (California) ; it cannot, chevators, be cultivated 
generally in Britain. The fact of its being cultivated with suc- 
cess in California is no doubt owing to the continual clear sky 
and then to the direct solar warmth ; the mean temperature is 
here in summer much lower than in Europe i in the same latitude. 
Triticum vulgare Vill, var. estivum, Summer Wheat. Britain. 
ile Ch in the fields, 64° 40’; in gardens, 69° 28’. Finland, 
Dwina river, 63°. Yakutsk. Western shores of North | 
Siadvine, 65°. Fort Liard, 60° 5/ (N. tes Shay of Canada). 
Peace river, 56° 6’. Ontario. East 
‘Hordeum vulgare L. (including lshiabsehon Barley. Faroe 
Isles, 62° 15’, seldom ripe grains. Norway, 70°. estern 
shores of the White Sea, 67°. Ob river, 61°. Yakutsk, 62°. 
Udskvi Ostrog, near a Ochotsk Sea, 54° 30’. Kamtschatka 
(inland), 58° to 54°. N. W. American shore south of Sitka, 
57°. Fort Norman, Mica river, 65°." East of Winnipeg; 
50°. St. Lawrence Bay, 5 
- Avena alo L., Oat. Scotland. Norway, 69° 28. Fin- 
land, 69°. sia: the same latitude as Hordeum vulgare. 
Yenisei, 61°. “Yabo, 62°. Kamtschatka aig North 
America: the same latitude as Hordeum vulgare 
Secale cereale L., Common Rye. Britain. Norway, 69° 30’. 
Finland, 67°. Mesen river, 65° 45’. Petschora region, 65° 45. 
Ural mountains, 57°. Obi river, 60°. Yenis ei, 59° 30’. Ya 
kutsk, 62°. Kamtschatka (inland). N. America, a little south 
of ae latitude of the barley ; eastern shores, 50°. 
§Grisebach die se der Erde, vol. i, p. 407. 
7 Middendorff, p. 7 
8 Richardson, Searchin ing Expedition through —, _ vol. ii, 
Fort Liard is betw =e and 500 feet above the sea-leve 
® Richardson, p 
p. 267. 
