Details of exhibit
- Exhibition:
- 1910 Fifty-fifth Annual Exhibition of the Royal Photographic Society of Great Britain
- Exhibit title:
- Cocoon of Acula Japonica woven between leaves of the Cherry, actual size
- Exhibitor:
- Dr. H. George Drake-Brockman
- Exhibitor 2:
- Harry Witty
- Section:
- II. Colour Photography. Autochromes and Other Colour Transparencies.
- Exhibit No.:
- 280
- Description:
- DETAILS RESPECTING TRANSPARENCIES 278-284
The eggs of Acula Japonica hatch out into the larva on or about July 1st. The caterpillars, in the early successive moults the appearance is as in transparency 279, which was taken soon before spinning took place. The caterpillar feeds on the leaf of the cherry. In the early morning the animal eats its fill and has a prolonged rest. During the afternoon when this transparency was made it fed for ten minutes, and during that time was in active movement, and then rested for 12 minutes. After about seven weeks from the time of hatching of the egg the animal reaches its maturity in the larval stage, and, growing sluggish, proceeds to weave together two leaves by fine silken strands, as in transparency 280, and spin its cocoon, the end of which, of basket-like appearance, can be seen projecting. Transition to the chrysalis stage then takes place. The chrysalis was removed after a suitable period of rest, and the extent of the cocoon can be seen in the transparency 281.
After about six weeks in the chrysalis state (transparencies 282 and 283) the moth or Imago emerges, the male being depicted in transparency 284. This takes place about the middle of October. - Exhibit type:
- Photographic equipment and supplies
- Process:
- Autochrome (Colour)
- Award:
- none
