IOI4 CHRONOLOGICAL ARRANGEMENT 



A.prostrata iii. 4. 2, Salix rhamnifolia i. 35. a, and -S". berberifolia i. 35. 3, Euphorbia pilosa ii. 93. 

 — He returned "in 1743," commenced his Flor. Sib. "in 1747," died "in 1755," and the publication 

 was completed "in 1769." 



Potentilla nivea of Arctic and Subarctic climates. Observed by Gmelin iii. pi. 36 throughout 

 Siberia; — by Pallas, on the Yablonoi mountains; by Fries, in Lapland; by Gunner, in Norway; by 

 Ledebour, on Caucasus; and is known to grow on the Alps from the Tyrol to Dauphiny (Koch, and 

 A. Dec). Westward, was observed by Sabine on Spitzbergen and in Greenland, and according to 

 Hooker grows on Melville Island and in Labrador, and from Carlton House to the Rocky Mountains 

 and Arctic Sea. 



Potentilla strigosa of Northern Asia and America. Observed by Gmelin iii. pi. 34, — Pallas, in 

 Siberia ; growing throughout, according to Ledebour. Farther East, is known to grow from Kotze- 

 bue's Sound to the Rocky Mountains, -and from Bear Lake to the Saskatchewan (Hook.) and Missouri 

 (Pursh) ; was observed by Michaux in Eastern Canada ; by C. J. Sprague at Cape Elizabeth, and 

 by Robbins as far as 43 at the Isle of Shoals (A. Gray) ; is termed "p. Pennsylvania " by Linnaeus, 

 but notwithstanding the name seems unknown within the limits of Pennsylvania. Transported to 

 Europe, was already naturalized in " 1812" in the environs of Paris, and has been found by Cosson 

 on the summit of the Serra de Segura in Spain (A. Dec). 



Spircea sorbifolia of East Siberia. An ornamental shrub observed by Gmelin on the Yenisei, 

 Lena, and beyond Lake Baical ; — by Pallas, in Daouria ; and known to grow as far as Kamtchatka 

 (Pers.). Received by Pursh from the Northwest coast of America, but has not certainly been found 

 there. By European colonists was carried to Northeast America, where it continues frequent in 

 gardens (A. Gray). 



Betula fruticosa of East Siberia. A clustered arborescent shrub observed by Gmelin i. pi. 36. f. 

 2 in Siberia ; — by Pallas i v. 720, abounding in cold subalpine situations in East Siberia, especially 

 around Lake Baical. Westward, has been found in Germany (Schrank, and Pers.). 



Artemisia sericea of Siberia. Observed there by Gmelin ii. pi. 04; — by Pallas trav. ii. 406, near 

 Tcheliabinsk. 



Aster biftdus of the Uralian plains. Observed by Gmelin trav. in Siberia — (Steud.) ; by Pallas 

 i. in, at 55 on the Volga. 



Serratula cyanoides of the Uralian plains. Observed by Gmelin ii. pi. 15 in Siberia; — by Pallas 

 trav. i. 60, along the Volga ; and known to grow as far West as Germany (Pollich, Spreng. fl. pi. I r, 

 and Pers.). 



Centaurca Siberica of the Uralian plains. Observed by Gmelin ii. pi. 42 in Siberia ; — by Pall, 

 trav. i. 64, along the Volga. 



Iris salsa of Siberia. Observed by Gmelin i. 31. n. 30 in Siberia ; — by Pallas iii. 132 to 483, in 

 low saline plains along the Irtich beyond Omsk. 



"In this year" (Spreng.), Seba commencing the publication of his Thesaurus, enumerating 

 Blaeria glabella i. pi. 20. f. 1 ; Erica ureeo/aris, baccans, Sebana, eapitata, nigrita, tenui folia, calv- 

 cina, and curviflora i. 2. 1 to ii. 20 t ; Gnidia pinifolia ii. 32. 5, I'oda/vria calvptrata ii. 99. 3, Oralis 

 grandiflora i. 22. 10, Mescmbrvanthciiiwn pomeridianum i. 19 5, Pelargonium melanauthum i. 18. 4, 

 Rafnia aiuplcxicaulis i. 24. 5, Liparia villosa i. 24 1. 2, Syncarpha gnaphaloides ii. 66, Helichrysum 

 speeiosissimum ii. 43. 6, Matricaria Capcnsis i. 16. 2, Osmites aslei iscoides i. 16. 4, O. camphorina i. 

 90. 2, and Adiantum lanceum ii. 64. 7. 6. — He died "in 1736," and the fourth volume was published 

 "in 1765." 



"1735, May" (Belknap ii. 118, Webster pest. i. 234, and Holmes), an epidemic disease which 

 obtained the name of throat distemper (iiiphtlterio) making its first appearance at Kingston in New 

 Hampshire ; where of the first forty attacked, none recovered. In ' August," it reached Exeter ; and 

 in "September," Boston; — and continued its ravages until the end of the next summer: "one hun- 

 dred and fourteen" persons dying in Boston ; and in New Hampshire, "not less than one thousand," 

 of whom "nine hundred were under twenty years of age," for the disease "chiefly affected children." 

 Westward, the disease was two years in reaching the Hudson ; but kept on " with some»interruptions, 

 until it spread over all the colonies." 



" In this year" (Winckl.), Linnaeus publishing his Systema Naturae, enumerating "gnaphalium 

 foliis decurrentibus obtusis mucronatis " Gnaphalium obtusi folium (" G. decurrens " amer. auth.). 



"In this year" (Spreng.), August Friedr. Walther publishing his Design, plant, hort., enumer- 

 ating* Silene gigantea pi. 11, Eriocephalus Africanus 1, and Bosea yermavora 10; — he died "in 

 1746." 



* Lysimachia ciliata of Northeast America. Transported to Europe is described by Walther pi. 

 12 — (Ph.): has become naturalized near Limbourg, observed from 1S11-22 (Lejolis rev. fl. Spa, 1S24) ; 

 and from 1843, naturalized in various parts of Britain. Westward, was observed by Drummond from 



