| Collection | GB 0231 University of Aberdeen, Special Collections |
| Level | Item |
| Ref No | UNIVERSITY 1437/2/2/19 |
| Title | Slide showing colour-tinted chart illustrating 'background [_] Xenopus'. |
| Date | Late 19th - early 20th century |
| Extent | 1 slide |
| Description | Slide shows colour-tinted chart illustrating 'background [_] Xenopus'.
Xenopos is an African clawed frog; in some classifications made the type genus of a separate family Xenopodidae.
The chart colours used are red, blue and green.
Red illustrates 'black background level.' Blue illustrates 'Eyeless Level'.
The 'x' axis illustrates days. The 'y' axis illustrates Melanophore index.
Label below image reads 'Fig. 3. Time relations of colour change in Xenopus. Circles of top curve represent transistion from white to black background (dim light); triangles - transistion from black background to equilibrium in complete darkness. Circles of bottom curve represent transition from white background to darkness. Black circles and triangles represent animals from which eyes were removed at the beginning of the experiment. (14oC). (Hogben & Slome, 1936.)
White handwritten label above image reads 'Background [_] Xenopus.' |
| Access Status | Open |
| Access Conditions | The records are available subject to the signed acceptance of the Department's access conditions. |