File Details
- Depositor
- Karen Dykes
- Date Uploaded
- 2021-12-10
- Date Modified
- 2021-12-10
- Fixity Check
- passed on August 08, 2024 at 10:26
- Characterization
-
Height: 5580
Width: 3796
File Format: tiff (Tagged Image File Format)
File Size: 63589896
Filename: 4728_pg_245.tif
Last Modified: 2024-08-08T18:39:56.924Z
Original Checksum: f6f422a5714f6b621326114a4f48e708
Mime Type: image/tiff
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| Transcript |
- March 30/42 [1942] Visited pond off Cedar Hill Cross [words crossed out] Mount Douglas
rds. [roads] to collect frog eggs. Oldest
egg masses just hatching (eggs laid about
March 10th [therefore symbol] 20 dys [days] appears to be inc. [incubation] period)
Many masses have been embryos thus [drawing of elongated embryo].
One fresh mass found.
Flushed a duck - female mallard? -
from clump of sword grass in centre
of pond + found there a nest containing
12 eggs.
A pair of mallard was seen on this
pond on March 10 Their presence
may account for relative scarcity
of frogs, eggs, phyllopods etc. +
"guaged" look of pond in general
- much floating broken grass, reed stems.
April 15 [1942] - Fresh egg mass of Hyla [tree frog] found
on March 30 (see above) was kept in
glass jar on windown ledge of
office (north exposure); eggs
developed + larvae hatched this date
This gives 15 days incubation period
under these conditions, which is possibly
shorter than in nature due to warming
by day.
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