If a robin survives to midwinter, it lives an average of 1.7 years after that. The oldest robins in your yard might be about six years old, although one banded bird lived almost 14 years. [sounds of winter wind ] So in a dozen years you've probably had at least a half-dozen robins of each sex involved in nesting.
Erlenmeyer flask. 1. a flask having a wide base, narrow neck, and conical form, convenient in laboratory experimentation for swirling liquids by hand. In emptying itself the aspirator bottle will aspirate 10 litres of air slowly through the water in the Erlenmeyer flask. Erlenmeyer flask.
The Bostwick Consistometer is a simple, dependable instrument which determines the consistency of various materials by measuring the distance which a sample flows under its own weight.xtra Long 30cm Bostwick Consistometer has 60 x 0.5cm graduations. Bostwick Consistometer. The unit is constructed of stainless steel and is equipped with two levelling screws and a level. The gate is spring operated and held by a positive release mechanism, permitting instantaneous flow of sample.