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PART III. NATURAL HISTORY. 
ORIGINAL COMMUNICATIONS. 
Article I. — On the Estivation of Flowers ; and on Ir- 
regularity in Flowers. Communicated by J. Rennie, 
Esq. M.A., A.L.S., Professor of Natural History, King's 
College, London. 
M. Adolphe Brongniart, has just published a curious paper in the 
Annales des Sciences Naturelles, upon " The relative insertion of divers 
pieces of each floral whirl, and its influence on the regularity and irre- 
gularity of flowers." He considers "a complete flower as formed by a 
succession of many whirls of diflferent organs, nearly approaching at their 
points of insertion, the lower successively enveloping those above." 
We cannot spare room for his minute illustration of these curious views, 
but shall content ourselves with giving the table he has drawn up as the 
result of his enquiries. 
Relation of the ^"Estivation, tvlth the Regularity/ or Irregularity 
of the Flower. 
VALVARY .ESTIVATION. 
Forai of the Corolla or Calyx. 
Rhamnese, Calyx and Corolla, Regular. 
Ericineas, Corolla, for the most part, Regular. 
Campanulacese, Corolla, Regular. 
Rubiacese, (Stellated.) Corolla, Regular. 
Lobeliaceae and Goodenovieee, Irregular, divided. 
Compositse, 
Corolla, 
Regular and irregular, divided 
Aristolochiae, 
Calyx, 
Irregular. 
Tiliacea9, 
Calyx, 
Regular. 
Asclepiadeas, 
Corolla, 
Regular. 
Passiflorea?, 
Calyx, 
CIRCULAR 
Regular. 
Rubiaceae, 
Corolla, 
Regular. 
Apocyneaj, 
Corolla, 
Regular. 
Polemoneaceje, 
Corolla, 
Regular. 
Convolvulacea; 
, Corolla, 
Regular. 
PrimulacefB, 
Corolla (for 
the most part) Regular. 
Cistinia?, 
Corolla, 
Regular. 
Caryophylleae, 
Corolla, 
Regular. 
Malvaceae, 
Corolla, 
Regular. 
Byttneriaces!, 
Corolla, 
Regular. 
Vol. I, No. 8. 
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