Observation4

This is the last observation. I found that many organisms I've observed before have disappeared. There are very few micro organisms in my MA. The major organism is Lictonotus. There are many this kind of organisms. They have long bodies and move not very slowly nor quickly. In the book "Free-Living Freshwater Protozoa: A Color Guide", the author tells that all members of litonotus are flattened predatoy or scavenging ciliates. I think it should be the reason for the death of other organisms.
There are still some single cells in my MA this week, but not as many as before.
Rotifers are some of the organisms that are still live in my MA. There are also many different kinds of rotifers, but the number is very low.
There are another organisms which are seemed to be quite many in my MA. They are genus Neobursaridium. This one is also the organims that I couldn't find the name of it before.
Few cyanobacteria are in the MA.

Work Cited:
1. D.J. Patterson and S.Hedley, "Free-Living Freshwater Protozoa: A Color Guide", CRC Press,
Boca Raton, Florida.
2. J.Lee John, Seymour H.Hutner and Eugene C.Bovee, ed."An Illustrated Guide to the Protozoa". Society of protozoologis, P.O.BOX368, Lawrence, Kansas 66044 U.S.A.

Observation3

Most of the things I observed last week are still there in my MA this week, and there are some new organisms that I haven't found before. The number of rotifer, halteria, and some other organisms that I observed last week has decreased, but the single cells are still keeping a large number.
There are the organisms I saw today:

1.Tachysoma
It has some filaments at both its head and its foot. It's body is long but not very thin.
It has well-developed (immotile) dorsal bristles.(125)

Work Cited:
D.J. Patterson BSc PhD DSc, Stuart Hedley(drawer) "Free-Living Freshwater Protozoa: A Colour Guide", NY: North&South America.

2.paramecium multimicronucleatum

3. Biepharisma( Phylum Ciliophora)
It's an interesting organism. Its body is long and thin. It sometimes moves and sometimes gather up itself.

4. Gastrotricha
I have observed it last week, but only one. This week, I found two in my MA.

5. Epistylis
There are still many epistylis in my MA.

6. cyanobateria

7. Rotifer.
There are always many different kinds of rotifers. This week I observed a new kind of rotifer which doesn't move away from it's space but moves its filaments by itself. There are also some other rotifers as the same as I observed before.

8. I found a really hugh organism which is nearly transparent but dark in the middle of it. It moves also very quickly. Its shape is ellipse but very long. I don't know what it is. When I asked Dr. McFarland to watch it, it's missed. I tried to find it but I couldn't find it any more. So we can't get its name. But it's really an interesting one because of its size.

The pictures