STATISTICAL BIOLOGICAL STUDY. 71 



Scrophulariacece. Number of parts in peloria of Lenaria 

 spuria, Yost, '99; number of stamens, Digitalis, Gallardo, '00. 



Orchidacece. Extremes in variability of number of spots 

 on flower, Chodat, '01. 



LEAVES. Seriation of numbers of paired leaflets of Pirus 

 aucuparia, Fraxinus excelsior, Senecio nemorencis, and Pole- 

 monium, Ludwig, '97, '98 b . Length and breadth of leaves 

 of Fagus silvatica and Carpinus betulus, Ludwig, '99. Leaf- 

 dimensions, Sanguinaria, Liriodendron, Ampelopsis, and 

 Ailanthis (n, small), Harshberger, '01. Number of side ribs 

 on leaves of Fagus silvatica, Carpinus betulus, and Quercus 

 monticola, Ludwig, '99; on leaves of beech, Pearson, '00; 

 leaves of mulberry, Fry, '02; dimensions of Typha leaves, 

 Davenport and Blankinship,-'9S; pine needles, Ludwig, '01; 

 from various branches of Pinus silvestris, Lee, -'02. 



Lot> length of pine needles A mm. a mm. C 



Pinus silv. , lower branches . . 22 . 163 db . 048 4 . 474 . 034 20 . 19 



" middle branches . 26. 524 .055 5. 167 .039 19.48 



" upper branches . 25. 949 .062 5. 858 .044 22.59 



Fruit. Number of ears in head of Agropyrum repens and 

 Brachypodium, Ludwig, '01 ; of the grass Lolium, Ludwig, 

 '00 b ; fruits per head of Ranunculus acris Ludwig, '00 b ; num- 

 ber of seeds per capsule-compartment, Helleborus, Ludwig, 

 ; 97; fruit length, Oenothera Lamarckiana, and Helianthus, 

 de Vries, '94; dimensions of beans in masses and in succes- 

 sive generations of same family, Johannsen, '03. 



BRYOPHYTA. Seriations of length of capsule-stalk, Bryum 

 cirratum, Amann, '96; parts in sexual organs of Marchantea 

 and Lonicera, Ludwig, '00 b . 



SOME TYPES OF BIOLOGICAL DISTRIBUTIONS. 



General. Pearson, '95 'Ol d . a modified by selection, 

 Reinohl, '03. 

 Type I. 



Petals of 222 flowers of Ranunculus bulbosus, de Vries, '94, 

 Pearson, '95, p. 401. 



Number of glands of fore legs of swine, Davenport and 

 Bullard, '96, Pearson, '96, p. 291: a=. 311 .016. 



