_The Sacramento and San Joaquin Valleys would be the paradise that they would develop into a new Japan._ Already we have shown how they could duplicate the 12,500,000 acres of irrigated and cultivated land in Japan in the drainage Basin of the Colorado River. They could do it again in the Sacramento and San Joaquin Valleys in California. There are 12,500,000 acres of the richest land in the world in those valleys and within two years after they had taken possession of it they would have several million Japanese reclaiming and cultivating it. They would bring their people over as fast as all the steamers of Japan could carry them. And long before we had got real good and ready to reconquer California they would have peopled its great central valley with a dense Japanese population who would fight us, the original owners of the country, to defend their homes from invasion. _What should the United States do to prevent all this?_ It should _immediately_, with just the same energy and expedition that it would act if an invading Armada had actually sailed from Japan, buy 100,000 acres of land in the San Joaquin Valley that can be irrigated from the Calaveras River and from the Calaveras Reservoir if it were built. It should subdivide that tract into one acre Homecrofts and put 100,000 Homecroft Reservists on it. It should go to work and build, right now and without any dilly-dallying or delay, the Calaveras Reservoir. Those 100,000 Homecroft Reservists should be set to work to build the Calaveras Reservoir and the irrigation system necessary to irrigate that particular Homecroft Reserve tract, and all the works necessary to protect the entire delta of the San Joaquin River from overflow and protect the channel of the river and broaden it below Stockton--"open the neck of the bottle" as they say in that locality. The government should go over onto the west side of the Sacramento Valley and buy another 100,000 acres, and subdivide it into one acre Homecrofts and enlist another corps of 100,000 Homecroft Reservists and put them on that land. Then it should set them to work to build a great wasteway, to temporarily carry off the flood waters of the Sacramento River--one that will not split the Sacramento River but that will safeguard Sacramento from that catastrophe. That work should be continued until it is finished. Another 100,000 acres in the neighborhood of Fresno should be likewise bought and another 100,000 Homecroft Reservists enlisted and located on it. They should be set to work to open a navigable waterway to Fresno and dig a great drainage canal that would also be a navigable canal, from Suisun Bay to Tulare Lake.