Some Bryozoa and spheres of Eremosphaera viridis

[myriophyllum]

Hi,

I'd like to show two more videos:

Some Bryozoa on a plant in darkfield illumination.
With higher magnifications the structure and the movements
of the "arms" are clear to see.

Zeiss Standard 18 microscope, objectives 4, 6.3, 10, 16, Ultracondenser.

http://www.youtube.com/watch?v=pv9NiIcYcCQ


In the second film there are green spheres of the green alga Eremosphaera viridis illuminated by alternating light - smooth transition of darkfield, oblique with blue background and brightfield. Zeiss FCE microscope (ca. 1928), objectives 40/0.95 and 60/1.0, Wechselkondensor.

http://www.youtube.com/watch?v=WBfWvLKM_Ic

Greetings

Jens

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more videos at http://www.youtube.com/user/mikrographica

[Cactusdave]

That first video is superb, really enjoyable. What camera did you use to take the video?

[myriophyllum]

That first video is superb, really enjoyable. What camera did you use to take the video?

Hej,

I used a Canon EOS 5DII.

Greetings

Jens

[Pau]

Wonderful Briozoa video, in special the syncronized cilia (cilia?) movement that seems a transportation belt.

Zeiss Standard 18 microscope, objectives 4, 6.3, 10, 16, Ultracondenser

Are you refering to the 1.2-1.4 Darkfield oil condenser?
Normaly I find it inadequte for low power mag objectives because its small illuminated circle.

[myriophyllum]

Hi,

oh, I made a mistake. It was not the Ultrakondensor, but the usual Achr.-Apl. in darkfield position with front lenses 0.63 and 0.9.
The 1.2-1.4 Darkfield oil condenser is not useful for the 6.3 or 4 objective...

Greetings

Jens

Wonderful Briozoa video, in special the syncronized cilia (cilia?) movement that seems a transportation belt.

Zeiss Standard 18 microscope, objectives 4, 6.3, 10, 16, Ultracondenser

Are you refering to the 1.2-1.4 Darkfield oil condenser?
Normaly I find it inadequte for low power mag objectives because its small illuminated circle.

[Planapo]

Jens, great videos, especially like that first one showing a bryozoan zooid in action.

As to the grammar: Your writing of "Bryozoae" here, or "A Bryozoa" (that you used as title of your video on youtube) is not correct. Correct would be to write in English: the Bryozoa or the Bryozoans for plural, and a Bryozoon (actually Greek) or a Bryozoan for a single entity or a single species, where the singular almost always means a colony of individual animals (or so-called zooids) as the vast majority of the Bryozoa are colonial.

Im Deutschen wäre korrekt: Die Bryozoa oder die Bryozoen oder die Moostierchen für Plural, und im Singular: Das Bryozoon oder das Moostierchen, wobei es sich dabei meist um eine Kolonie handelt. Ein Individuum (meist, wie gesagt, aus einer Kolonie) bezeichnet man als Moostierchen- oder Bryozoen-Zooid, mehrere davon als Zooide.

--Betty

[myriophyllum]

Hi,

thank You all for the comments,
I've corrected the mistakes as far as it was possible.

Greetings

Jens