518 Chronicles of Science. [July, 



walnut (Juglans nigra). The flora of this district resembles that of 

 the western part of New York State. 



III. Superior type. — Amongst the species of this district, Mr. 

 Drummond mentions thirty-seven, belonging to thirty-two genera. 

 Twenty-six of the genera are British, but only nine species, viz. 

 Arabis petrsea, Linum perenne, Matricaria inodora, Melampyrum 

 pratense, Polemonium cteruleum, Humulus lupulus, Carex Vahlii, and 

 Aspidium lonchitis. Some few species, which in the United States 

 are north-western plants, reappear near the north-eastern Canadian 

 boundary line. Thus Parnassia palustris, a species of Upper Michi- 

 gan, the Lake Superior region, and north-westward, likewise occurs in 

 Labrador and Newfoundland. Under the preceding types the lists 

 given are representative, not complete. The next list includes all 

 yet known. 



IV. Maritime type. — Genera twenty-six, of which twenty-one are 

 British ; species twenty-eight, of which fourteen are British ; viz. Hon- 

 kenya peploides, Spergularia marina, Lathyrus maritimus, Ligusticum 

 Scoticum, Plantago maritima, Armeria vulgaris, Glaux maritima, 

 Mertensia maritima, Salicornia herbacea, Chenopodina maritima, 

 Salsola Kali, Triglochin maritimum, T. palustre, and Juncus bul- 

 bosus. It is remarkable that many maritime species occur in the 

 neighbourhood of the great lakes ; thus, at least eight truly sea-shore 

 plants have been found near Lake Superior. Many are also found 

 inland near salt springs. It is suggested that these facts indicate the 

 former partial submergence of the country, when the sea-shore was 

 much farther inland than now. 



V. Alpine type. — Of strictly Alpine character Mr. Drummond 

 mentions twenty-nine species belonging to twenty-six genera. Twenty- 

 three of the genera are British, including the following fourteen 

 species : — Thalictrum alpinum, Draba incana, Viola palustris, Sib- 

 baldia procumbens, Eubus arcticus, Epilobium Alpinum, Sedurn 

 Bhodiola, Saxifraga stellaris, S. nivalis, Erigeron acre, Arctostaphylos 

 alpina, Betula nana, Salix reticulata, and S. repens. 



The list of sub-Alpine species contains nineteen genera, of which 

 sixteen are British ; and twenty-two species, of which fourteen are 

 British, viz. Bubus Chamsemorus, Solidago virgaurea, Vaccinum 

 uliginosum, V.Vitis-Idsea, Euphrasia officinalis, Polygonum viviparum, 

 Empetrum nigrum, Tofieldia palustris, Scirpus caespitosus, Poa alpina, 

 Phleum alpinum, Woodsia alpina, Asplenium viride, and Lycopodium 

 Selago. 



It is to be regretted that the names of the species in Mr. Drum- 

 mond's lists are without the affix indicating their authority. In the 

 present day, when descriptive natural history is crowded with synonyms, 

 and when scarcely two naturalists agree in specific arrangement, a 

 name cannot be considered definite, unless that of its originator is 

 added. 



Michaux. — The Abbe Ovide Brunet, professor of botany at the 

 Laval University, Quebec, has collected sufficient materials to enable 

 him to give for the first time a tolerably complete account of the 

 travels of the botanist Andre Michaux, through Canada. His paper, 



