On the arrival of the "Lawrence," yesterday, from Marysville, we received more news of the Gold Lake excitement, now prevailing in those parts. It promises to spare no one. Many who would not be understood to have yielded to it, seek, under various pretences, to get away—some pleading business in other quarters of the mines; others desiring the recreation of a country jaunt. It is reported that, up to Thursday last, two thousand persons had taken up their journey; that many who were working good claims, and had made considerable progress, were deserting them for the new discovery. Mules and horses were almost impossible to be obtained. A supply from this quarter was expected daily, and most anxiously awaited. Although the truth of the report rest on the authority of but two or three who have returned from Gold Lake, yet but few are found who doubt their marvellous revelations. The first man who came into Marysville took out a party of forty as guide, on condition they paid him one hundred dollars each if his story was verified, and offering his life as a forfeit for any deception.

"This party, it is understood, came near losing their way, from the difficulty the guide found in retracing his path, after the snow had melted. Fortunately, however, they encountered another man, who was on his way returning, and he showed the track. The second person has since left with a much larger party, who are to give him two hundred dollars each, and the same forfeit is provided. The spot is described as very difficult of approach, and it is feared that many will lose their way. A party of ten Kanakas are reported to have wintered at Gold Lake, subsisting chiefly on the flesh of their animals. They are said to have taken out about $75,000 the first week. The lake is not large, and, after the wet season ceases, has no outlet; at present, however, the water runs over the basin, and finds its way into the North Fork of Feather River. At a lower stage, it admits of easy drainage, and the undertaking is already projected.

"Of course the most extravagant anticipations are founded on the result of this work, induced by the yield from the borders of the lake which have already been realized. The "placer" proper is very limited, and little encouragement is given as to the character of the surrounding country; indeed, it is probably entirely unexplored, as the region lies about as far up among the snows as the most adventurous have yet penetrated."

The Yuba River is destined to be thoroughly rifled of its wealth. Three miles above the new town of Lina, a company has turned the river from its course, and made it run through a lateral slough. Prospecting of the bed has proved very satisfactory, and the shares in the company's stock have sold at a high rate.

As was apprehended, various difficulties have occurred between the owners of land at Sacramento City, and a large number of squatters upon it. The ground was bought and surveyed, and the title to ownership was perfect. But the number of emigrants who arrive at Sacramento at particular seasons forces them to encamp outside of the regularly built town, and when thus encamped, they consider themselves as settlers, and are unwilling to give up possession of the ground. The power of the law has been called into requisition several times to eject these squatters.

The emigrants to California by way of the Great Salt Lake route have endured terrible hardships during the present year. The rigors of the season, and the want of water, have been but secondary matters. The Indians, always unfriendly, have been particularly hostile, and several battles between them and the emigrants have taken place. In one of the battles, thirty Indians were killed, while the whites had several wounded, but none killed. It is supposed that the assailants belonged to the Utahs. The Salt Lake City is the great refuge of the belated emigrants upon that route, and the Mormons are hospitable to all who visit them for shelter, or for mere curiosity.

The great body of the emigrants continue to take the old route, which we have elsewhere described, and find that it is the safest and shortest of the land routes. Judging from the statements of the number of emigrants who have passed Fort Laramie this season, we should say, that the route could scarcely be called a wilderness, when it is impossible to travel thirty miles without meeting with parties and families of whites. Part of this tide of emigration will flow to Oregon, no doubt, on account of the fertile lands to be there obtained; but the golden land will get the bulk of it.

In a recent tour through the region bordering on Moqueleme River, in California, a couple of gentlemen from Stockton, discovered a cave or grotto of great extent. They found that it contained large quantities of stalactite, and saw evidences of gold. The Indians who accompanied the gentlemen were horror stricken at their audacity, when they entered a cave which tradition said no man returned from alive. The skeleton of a human being was found at some distance from the opening.

An event has occurred which will no doubt exercise a great influence on California affairs. This is the discovery of the existence of abundance of gold in Oregon territory. The discovery created great excitement through the various cities and towns of Oregon, and the northern towns of California. That which is exhibited, shows an entirely different character to any of that dug in the mines of California. It contains large quantities of platina, and is said to be of a richer character. The mines just discovered are situated about two hundred miles from Oregon City. The consequences of this discovery may be easily apprehended. Oregon will secure a larger share of the emigration from the Atlantic States than she had before, and her progress will be rapid, for her soil and climate render the country an attractive place of residence. But will the progress of California be less rapid in consequence of this? We think not. The united attractions of the two territories will operate for the benefit of both, and only tend to increase the quantity of emigration.