M0016616: Illustration of diagramatic section of Hewitt's valved stopcock incorporated in his nitrous oxide apparatus

Previous title, replaced March 2022: Hewitt's valved stopcock.

Illustration published in Duncum, Barbara M: The development of inhalation anaesthesia, London : Oxford University Press, 1947

1958

1 photograph sheet film negative; 8.3 x 10.8 cm

Wellcome Collection holds the publication depicted in the glass plate negative

Copyright is held by Wellcome Collection

Catalogue data comes from a combination of entries in the original glass plate registers, metadata created when the glass plates were digitised in the early 2000s and enhancements made by the cataloguer in 2022.

Please consult the digitised version as this item is fragile. Email library@wellcomecollection.org to request access to the physical item.