Darwin-Wallace Celebration. 67 



Objects exhibited in the Library. 



ADDRESSES from Universities, Academies, Societies and other 

 corporate bodies, presented at the Afternoon Meeting. 



PORTRAIT of DARWIN from a photograph by his son, from which 

 the Darwin-medal portrait was principally modelled. Recent 

 photographs of Dr. A. R. WALLACE, and an older one on which 

 the medal- portrait was based. 



Plaster casts from the dies of the medal, by Mr. F. Bowcher. 



EAST TABLE. 



Flowers of natural hybrid Odontoglossums with their 

 parents ; some of these hybrids have been proved 

 experimentally. 



Exhibited (by permission of the Director, Royal Botanic Gardens 

 Kew) by R. ALLEN ROLFE, A.L.S. 



1. Odontoglossum crispum, Lindl., from Pacho, showing wide range 



of variation, with numerous blotched varieties (so-called) from 

 the Pacho and Velez districts. 



2. Odontoglossum crispum var. Lekmanni, from Popayan, showing 



small range of variation. 



3. Species with which 0. crispum grows intermixed in the Pacho 



and Velez districts. 



O. gloriosum, Linden & Reichb. f., in Pacho and Velez districts. 



O. Lindleyanum, Reichb. f. & Warsc., in Pacho and Velez districts. 



O. Ititeopurpureum, Lindl., in Pacho district. 



O. Hunnewellianum, Rolfe, in Velez district (only). 



O. triumphans, Reichb. f., in Velez district. 



F2 



