Vaderlandsche letteroefeningen. Jaargang 1778

[p. 428]

Waarneemingen omtrent de lugts-gesteldheid, weder en wind, te Amsteldam, in July, 1778.
Door Antonius Wilhelmus Schaaf, Med. Doct.

	Barometer.			Therm.			Winds Streek.			Weder.
D.	's. morg.	's midd.	's av.	mo.	mi.	av.	's morg.	's midd.	's av.	Gesteldh.
1	29.10¼	29.9¼	29.0¾	67	74	65	Z	W t Z	Z W	Buijig.
2	-10¾	-11¾	-11¾	65	68	65	N	N N W	W Z W	Betr. Wolk.
3	-11¼	-10¾	-10¼	66	74	65	W t Z	W	W t N	Held. Wolk.
4	- -	-11¾	30.0¼	68	72	66	W	-	N t W	- -
5	30.0½	- -	29.10¾	66	77	74	N O	O	O	- -
6	29.11¼	-11¼	-11¼	71	78	69	O	N W	N W	- -
7	- -	-10¾	-9¾	72	79	68	N W	N N O	N	- Dond. R.
8	-10¾	-11¾	30.0¼	66	69	65	N t O	-	N t O	Betrokken
9	30.1¼	30.1¼	-1¼	67	74	66	-	N O t N	N	Held. Wolk.
10	- -	-0¾	-0¼	66	77	66	O t N	W	W	- -
11	29.11¾	-0¼	- -	68	71	63	W	N W	N	- -
12	30.0¼	-1¼	-1¼	66	72	66	N	N t W	N N W	- Regen.
13	-1¼	- -	-0¾	69	79	70	W t N	W	-	Betr. Held.
14	-0¼	29.11¾	29.11¾	71	82	75	Z O	-	N N O	Held. Wolk.
15	- -	30.1¼	30.1¼	70	75	69	N t O	N O t O	N O t O	- -
16	-0¾	-0¼	-0	66	78	70	Z O t O	O t N	O t N	- -
17	29.11	29.11	29.11½	69	77	66	Z	N	N	Dond. Reg.
18	30.0½	30.0½	30.0½	68	73	67	N t O	N t O	N O	Held. Wolk.
19	-0	29.11¼	29.9½	67	77	72	N O	O t N	O t N	- Weerl.
^*20	29.8	-6½	-7	73	86	70	O	O	Z W	- Dond. R.
21	-7	-6¼	-6	67	72	64	Z	Z	Z	Buijig.
22	-6¼	-8	-9	64	62	63	W	W	W	-
23	-8½	-8½	-8½	63	65	63	Z W	Z W	Z W	-
24	- -	-8	- -	63	65	63	-	-	W	-
25	-9	-7	-7½	62	73	65	Z	-	Z W	-
26	-9	-10	-10½	62	68	64	W	W	W	Helder.
27	-10½	-9¾	-9¼	63	73	65	Z	Z t O	Z t O	- Reg.
28	-8½	-9¼	-9	66	73	66	-	W	Z W	- -
29	- -	-9½	-10	60	69	64	Z W	-	W	Buijig.
30	-10	-10	-8½	62	69	62	W	-	Z O	-
31	-8½	-9	-10	64	69	63	N O	N W	N W	-

Hoogste Barometer d. 30.1¼	} middelb. d. 29.9¾.
Laagste Barometer d. 29 6¼	} middelb. d. 29.9¾.
Hoogste Thermometer gr. 86	} middelb. gr. 67¼.
Laagste Thermometer gr. 60	} middelb. gr. 67¼.

* Den 20 's namiddags, ten 1 uuren, in de schaduwe, was de Thermometer gereezen tot 84 gr. en ten 2 uuren 86 gr. en in de Zonnestraalen 96 gr.