4. Two copies of those publications dealing with material from the Central 

 Embryological Collection should be sent to the Central Embryological 

 Library of the Hubrecht Laboratory. 



5. If material from the Central Embryological Collection has been used in 

 investigations, it is respectfully requested that this be indicated in the 

 publications concerned. 



Restrictions: 



6. Very rare or regularly consulted material can only be studied at 

 the Hubrecht Laboratory. 



7. Material of great historical value cannot given on loan. 



8. If material has not been treated properly or (after special request) has 

 not been returned in time by an investigator, material will no longer be 

 lent to the person in question. 



VII Photographic Reproduction Service 



The Hubrecht Laboratory makes photostats on request of papers present in 

 the Central Embryological Library or borrowed from elswhere. The negatives 

 wil remain at the Laboratory. 



Prices per page (both text and plates): 



Positive microfilm (25 X 36 mm): H./ 0.15 ( = ± $ 0.04) 



Enlarged prints 



9 X 12cm (box camera size): H./ 0.15 (=±$0.04) 



13 X 18 cm (average page): H./ 0.20 (= ±$0.05) 



18 X 24 cm (large page): H.f 0.25 (=±$0.07) 



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