List of Contents to Vol. XIII, 1920-1922. 
The Royal Botanic Garden 
List of Staff at April 1922 
Rules and Regulations 
Historic Notice 
Regius Keepers 
Principal Gardeners from 1756 
Features of the Garden. With Key-Plan 
Teaching in the Garden 
Enumeration of Visitors, r889—1921 ee 
Primula et Omphalogramma : Diagnoses Specierum Novarum. 
By Professor Bayley Balfour, F.R.5S. . 
Rhododendron: Diagnoses Species Novarum. By Professor 
Bayley Balfour, PS. - ; ‘ : : 
Some Asiatic Sedums in the paper Herbarium; with 
supplementary notes from 
Museum. With Pfates CLXX- CLXXIX and One 
Text-figure. By R. Lloyd Praeger, B.A. 
New Species of the Genera Phtheirospermum and Pedicularis. 
By Gustave Bonati : ‘ : ; 
Diagnoses Specierum novarum in herbario Horti Regit 
Rotanici Edinburgensis cognitarum. DI.—DL. 
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