186 The Siphonophores. [ March, 
ference in the canned fish is, however, probably hardly appreciable. 
The canned salmon from the Columbia, however, bring a better 
price in the market than those from elsewhere. The canners 
there generally have had a high regard for the reputation of the 
river, and have avoided canning fall fish or species other than 
the quinnat. In the Frazer’s river the blue-back is largely canned, 
and its flesh being a little more watery and perhaps paler, is 
graded below the quinnat. On Puget sound, various species are 
canned; in fact, everything with red flesh. The best canners on 
the Sacramento apparently take equal care with their product 
with those of the Columbia, but they depend largely on the some- 
what inferior fall run. There are, however, sometimes salmon 
canned in San Francisco, which have been in the city markets, 
and for some reason remaining unsold, have been sent to the 
canners; such salmon are unfit for food, and canning them should 
be prohibited. 
The fact that the hump-back salmon runs only on alternate 
years in Puget sound (1875, 1877, 1870, etc.) is well attested and 
at present unexplained. Stray individuals only are taken in other 
years. This species has a distinct “run,” in the United States, 
only in Puget sound, although individuals (called “lost salmon”) 
are occasionally taken in the Columbia and in the Sacramento. 
——:0:——. 
THE SIPHONOPHORES. 
Il.—THE ANATOMY AND DEVELOPMENT OF AGALMA (CONTINUED). 
BY J. WALTER FEWKES. 
S gee key to the zoological affinities of Aga/ma, the adult struc- 
ture of which has been given in a previous article is to be 
found in its embryology or the development from the egg. To 
that subject I propose to devote the present article, as it is impos- 
sible in the case of this jelly fish, to discuss its morphological 
relationship from the study of anatomy alone. 
In this discussion I shall consider, in the first place, the develop- 
ment of the Aga/ma from the egg, and in the second, the growth of 
new buds along the axis to form those new parts, the adult forms 
of which have already been described in some detail. The former 
division includes the consideration of the changes in form which 
the colony as a whole passes through in the growth from an egg to 
an adult like Fig. 1; the latter, the development of each of the 
different members of the community, or their growth from buds 
formed on an axis already well developed. 
1 NATURALIST, 1880, p. 617. 
