[58]

Phytologist vol. 2. p. 261. Ailsa Crag examined by Prof. Balfour with some care. It is about a dozen miles from main-land. It is precipitous 1100 ft high 3000 ft long 2000 ft. broad. Tolerably fertile - rabbits sheep goat isld fowl. Has 79 species of Phanerogams with 64 genera belonging to 33 natural Families

64/79 64 / 150 128 / 32 (1.2 So that every five genera have only six species.

And each Family barely has 2 genera.

(20)

Cruciferæ 3/79 = 1/26 Britain 1/22

Leguminosæ 2/79 = 1/39 [Britain] 1/20

(Caryophyllaceæ 7/79) = 1/11 [Britain] 1/24

Umbelliferæ 2/79 = 1/39 [Britain] 1/22

Compositæ 9/79 = 1/8 [Britain] 1/10

Gramineae 10/79 1/10th [Britain] 1/12

 

Phytologist. v. 2. p. 245. Mr Keddie on the Bass Rock 420 ft. high 1 mile in circumference; 1 1/2 mile from shore –

List of Plants.

[Not transcribed]

as many genera as species & 8 Nat: Fam:

Each Family has 1.6 genera.