150 RESOURCES OF CALIFORNIA. 
wet weather or within the reach of the sea-fogs. A kind of 
molasses may be made by breaking off the twigs covered with 
the secretion, and boiling them in water. 
Honey-dew is found in most countries where the soil is bar- 
ren or the climate dry, and may be the same with the manna 
of the Hebrews. It is known, too, that various insects secrete 
sweet liquids; and some of the Aphis genus are kept as milch- 
cows by the ants, which stroke them down or tickle them with 
their antenne, when they want some of the sweet milk, and 
the captive Aphis obligingly squeezes out the secretion through 
her sides, which is industriously gathered by the milk-ants. 
Nott.—Nearly all the information about the quadrupeds and birds of Cali- 
fornia, heretofore printed, may be found in the papers of Dr. J. 8S. Newberry 
and Professor 8. F. Baird, in the United States Pacific Railroad Survey Re- 
ports. Most of my information about the fishes and fisheries, and much even 
of the language, is derived from the conversation of Dr. W. O. Ayres, of San 
Francisco; and I hope that, as he is the most competent man, he will some 
day treat the subject in a special work. 
