'4m 



REPORT— 1903. 



Eecommendations for the Collection of Botailicdt Photogrojphs. 



A. As to Subject. — The Committee propose to include the following 

 range of subjects : — 



1. Portraits of any species of plant (more particularly foreign plants 

 growing under natural conditions) illustrating habit, natural surround- 

 ings, or points of morphological or physiological interest. 



2. Diseases or malformation of plants. 



3. Photographs of plants raised for purposes of experiment. 



4. Photographs illustrating plant associations. 



In most cases two photographs would be desirable, one giving a geileral 

 view of the plant or vegetation and another giving details of the subject. 



B. As to Camera. — Tile Committee recommend the use of a whole or 

 half-plate camera, though quarter-plate photographs will be accepted if 

 well defined and clear. 



The camera should admit of lotig extension, so that work at close 

 distances may be possible. 



As it is essential that the ptints should be permanent, the platino- 

 type pi-ocess is recommended Whete possible. The use of isochromatic 

 plates is strongly recommended. 



In many photographs the inclusion of A scale object is advisable. 



C. As to Recording. — In Order to preserve the scientific value, each 

 photograph should be accompanied l)y as many of the following details 

 as can be given on the forms which -vVill be supplied for the purpose, and 

 a copy of which is enclosed : 



(a) Name of plant and locality, with rainfall of district where known. 



(6) Special features shown. 



(c) Date when photographed. 



{d) Name and address of photographer or of society under whose 



direction the photograph was taken. 

 [e) Whereabouts of the negative, i.e. whether it is retained by owner, or 



dejDosited with a professional photographer or with the Committee. 

 (/ ) Terms on which prints, enlargements, or lantern slides will be 



supplied. 



Further infornifltlon and additional forms for registration may be 

 obtained from the Secretary of the Committee, Professor F. E. Weiss, 

 Owens College, Manchester, to whom all communications should be 

 addressed 



Botanical Photographs Committee. Form A. 



Local 

 Number 



Size of 

 Negative 



! I 



Subject, Locality, Date ' Pliotographal I 

 and Special Feature sbowu by 



AilcJress at 



wliicli Negative 



is deposited 



Price of 

 Print 



Price of 



Lauteru 



Slide 



This form should be filled in and enclosed with the prints or negatives submitted 

 to the Committee for registration. Additional copies may be obtained from the Secre- 

 tary, Professor F. E. Weiss, Owens College, Manchester, or from the offices of the 

 Beitish Association, Burlington House, London, W. 



