1800 nî kho-ha̍k

Chit phiⁿ bûn-chiuⁿ kài-siāu 1800 nî kho-ha̍k ê hoat-hiān kap ki-su̍t ê hoat-tián; kî-tiong mā pau-hâm chōe-chōe tiōng-iàu ê kho-ha̍k siong-koan sū-kiāⁿ.

kho-ha̍k nî-pió
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Chhut-sì

• 2 goe̍h 12 ji̍t: John Edward Gray, Liân-ha̍p Ông-kok seng-bu̍t-ha̍k-ka.
• 7 goe̍h 31 ji̍t: Friedrich Wöhler, Tek-kok hòa-ha̍k-ka.