7. 
a 
Proceedings. 59 
‘Dispersal of Shells’ passim, and Cooke, ‘Cambridge Natural 
History,’ iii. p. 282-3, should be consulted as to distribution of 
forms ; but it is as well to mention that Z. stagnalis (=L. 
jugularis of Canadians), L. peregra (Miill.), ZL. truncatula (Miill.), 
and LZ, palustris (Miull.), occur in the whole of Europe, N. Asia 
to Amurland, Turkestan, Afghanistan, N. Persia, Kashmir, 
Greenland, N. America (from the Atlantic to the Pacific), and 
from North Canada and British Columbia as far south as 
Texas. 
Botany.—In Canada and Michigan golden-rod, ragwort, 
purple * marguerites, dandelion, burdock, and teazel were abun- 
dant, the last three in fruit. 
A. Plants indigenous to N. America and England :—Rose- 
bay willowherb (Hpilobium angustifolium), marsh marigold, 
sundew, ragwort, white water-lily, yellow water-lily, raspberry, 
Geranium dissectum, herb-robert, Potentilla anserina (silver- 
weed), common wood-sorrel, Osmunda regalis, dogwood, enchan- 
ter’s nightshade, water knot-weed (Polyyonum amphibium), 
harebell, marsh hedge-nettle. 
B. Plants introduced into N. America :-—Dandelion, chicory, 
the goosefoots (except Ch. glaucum, which is indigenous), 
codlins and cream (Epilobium rigidum), watercress, bindweed, 
pasque-flower, yellow melilot, yellow toad-flax, oxeye daisy, 
our three common buttercups (2. acris, R. repens, and R, 
bulbosus), musk-mallow, bladder campion, ground-ivy, bell- 
flower, yellow flag, spurrey, soapwort, night-flowering catch- 
fly, stinking iris, small periwinkle, bittersweet, tansy, common 
mugwort, red clover, viper’s bugloss, henbane, hound’s tongue. 
The Canadian raspberry resembles ours; but the Canadian 
blackberry is a lowly, erect shrub with all stem and no branches, 
about 6 inches high, sparse fruit, and no thorns. 
Of seaweeds in the St. Lawrence Gulf occurred Fucus 
vesiculosus (bladder-wrack) and Laminaria saccharina. Off New 
York a specimen of Sargassum vulgare occurred. 
Sisyrinchium angustifolium, Bermudan blue grass, fairly 
* Especially in Michigan. 
