HOMOTYPOSIS IN THE VEGETABLE KINGDOM. 
361 
exhibits any sensible difference from '4570 the mean of all twenty-two series. We are 
compelled therefore to conclude that there is no relationship between the variability of 
a species with regard to any organ, and the homotypic correlation of such organs. It 
would be quite impossible to assert that as the variability of a species decreased, its 
homotyposis increased. But according to tlie results reached in this paper heredity 
is a result of homotyposis. Hence there seems, so far as our researches go, no ground 
Table XXXIV.—General Besults for Variability. 
Coefficient 
Position in 
Eace. 
Character. 
of 
correlation 
variation. 
. table. 
Hartstongue, Somersetshire .... 
Sori on fronds. 
41-96 
(ii.) 
Broom, Yorkshire. 
Seeds in pods . 
36-78 
(xiii.) 
Holly, Dorsetshire. 
Prickles on leaves.... 
26-29 
(v.) 
Nigella Hispanica, Slough. 
Segments in capsules. 
19-39 
(xx.) 
Holly, Somersetshire. 
Prickles on leaves.... 
18-74 
(xviii.) 
Ash, Dorsetshire. 
Leaflets on leaf. 
18-65 
(xvi.) 
Ash, Monmouthshire. 
18-57 
(xiv.) 
Mushroom, Buckinghamshire .... 
Gill-indices. 
18-28 
(ix.) 
Ceterach, Somersetshire. 
Lobes on fronds .... 
18-25 
(i-) 
Papaver Phoens, top of Chilterns . 
Stigmatic bands .... 
17-81 
(viii.) 
Wild Ivy, mixed. 
Leaf-indices. 
17-77 
(xix.) 
Papaver Phceas, Quantocks. 
Stigmatic bands . 
17-66 
(x.) 
English Onion, Hampden. 
Veins in tunics. 
17-43 
(iv.) 
Spanish Chestniit, mixed. 
Veins in leaves. 
15-72 
(vi.) 
Ash, Buckinghamshire. 
15-46 
(xvh.) 
Papaver Phceas, Lover Chilteins . . . 
Stigmatic bands .... 
15-27 
(XV.) j 
Shirley Poppy, Hampden. 
55 .... 
15-17 
(xi.) 
Spanish Chestnut, Buckinghamshire. 
Veins in leaves. 
14-31 
(xii.) 
Shirley Poppy, Chelsea. 
Stigmatic bands .... 
13-99 
(iii.) 
tVoodruff, Buckinghamshire .... 
Members in whorls 
13-46 
(xxn.) 
Beech, Buckinghamshire. 
Veins in leaves. 
10-77 
(vii.) 
Malta Potundifolia, Hampden .... 
Segments in seed-vessels 
7-80 
(xxi.) 
Mushroom, Buckinghamshire .... 
Lengths of gills .... 
21-00 
.... 
Breadth of gills .... 
23-42 
_ 
tVild Ivy, mixed. 
Lengths of leaves .... 
30-94 
— 
)) . 
Breadths of leaves 
34-34 
j 
Mean of first 22 cases . . 
— 
18-62 
Mean of all 26 cases . . . 
—• 
19-97 
for asserting that increased intensity of heredity means decreased intensity of varia¬ 
tion and vice versd. The general impression formed upon my mind by our measure¬ 
ments is the approximate constancy of the pure homotypic factor, or at any rate its 
variation within a fairly small range, and consequently the approximate constancy 
within a like small range of the hereditary factor for all species and all characters. 
VOL. CXCYII. — A. 3 A 
