12 paper slips, entitled 'Obs.' 1 to 12, with different notes and remarks in botany and zoology:
'Obs. 1' on 'Spergula saginoides' and 'Senecio';
'Obs. 2 Gozes Entomologische';
'Obs. 3 hemerobius';
'Obs. 4 Adanson i sin Voyage au Senegal';
'Obs. 5 Centunculus minimus';
'Obs. 6 Gentiana pulchella';
'Obs. 7 Under resan i Skärgården';
'Obs. 8' on 'Carex' with reference to Linné, C. v. 1781. "Supplementum plantarum". Brunswick;
'Obs. 9 Gentiana tenella';
'Obs. 10 Af Hr Hedvigs 25 Genera muscorum', referring to Hedwig, 1782. "Fundamentum Historiae Naturalis Muscorum Frondosorum". Leipsig;
'Obs. 11 Månne så många Lärskilta species';
Obs. 12 Jag vet ej hvad man skal sägn om Porella'.
Most refer to observations made about Gothenburg and on the western coast of Sweden. Swartz refers to Altrömer's herbarium and to Anders Dahl.
Possibly sent with the letter from Olof Swartz to Carl Linnaeus the Younger, 23 May 1783 n.s., "The Linnaean correspondence", linnaeus.c18.net, letter L6227.