April 1676
Three days after sending the letter of April 21, 1676, Leeuwenhoek began to record a series of observations that would last until late September. The letter reporting it all to the Royal Society also included two prior observations, one of them ongoing.
| infusion | preparation | start | end | duration | obs # |
|---|---|---|---|---|---|
| Rain 1 | rain standing for a few days in a tub | September 15, 1675 | 1 | ||
| Well | 1675 | 1676 | indeterminate | 23 |
In the rain water, he saw Vorticella, an oval ciliate, a long ciliate, and Monas. In the well water, he saw no living creatures.
| infusion | preparation | start | end | duration | obs # |
|---|---|---|---|---|---|
| Pepper 1 | 3 oz whole pepper in snow water | April 3 | April 24 | 3 weeks | 31 |
| Pepper 2 | ½ oz whole pepper in 2 ½ oz snow water in porcelain teacup | April 26 | June 1 | 5 weeks | 32 - 50 |
| date | Infusion | findings | quantity | notes | obs # |
|---|---|---|---|---|---|
| April 24 | Pepper 1 | Bodo caudatus, cyclidium, vorticellabacteria, bacilli | very many | 31 | |
| April 26 | Pepper 2 | nothing | 32 - 50 |
