Indignant that so marked an insult should be given to an esteemed guest and neighbor, simply because he was a countryman of his own, by Mr. Johnston, our host immediately turned to the other, and in company with the ex-president, who had also witnessed the petty slight, renewed the conversation with marked attention, and left the consciously embarrassed Professor to the enjoyment of his own affected superiority!

Mr. Johnston arrived at Albany on the 4th day of January, 1850. He staid three weeks, and delivered his course of lectures, which, as we have not them under notice, we na, and his usual reference to statistical tables, geological reports, speeches of legislators, and pamphlets, he makes up sundry sage commentaries and conclusions on American government, institutions, religion, life, and manners; some of which are sensible enough when simple of solution, and others ridiculously absurd, as touching the true results which a fair mode of reasoning would draw from his premises. Here is a specimen: He attended the annual meeting of the State Agricultural Society, at which the usual business of the Society was transacted. "I was struck with the gravity and decorum with which the discussion was carried on, and with the apparent self-possession of the speakers. It is partly to the general acknowledgment of no higher rank than his own, that the absence of our insular nervousness in the American speaker, is to be ascribed; but partly, also, to the undisciplined and uncontrolled way in which children are brought up,"(!) He also coins another story, in which a lady is brought in, to prove (to us,) the utter emptiness of his conclusion.

Our professor is also great on American slavery, which he discusses with about the same amplitude of reasoning, that certain other foreign philanthropists indulge, and reads us frequent lectures on the astounding benefits of free-trade, as exhibited in the recent striking and disinterested examples of the English government, for our "trans-atlantic" imitation!

Jan. 26, at Philadelphia. Along the railway route, and in the depth of winter, another geological notice of the country - original in himself, no doubt! In this city he was invited by Professor Hare to attend a "very agreeable whister(!) party," - a new social invention we fancy - probably chemical or geological, as we do not know that name in any other of the sciences. We are happy to learn that the green sands and phosphates of lime of New-Jersey, have struck his attention - for his skill in such subjects we have a true respect - and that his examinations confirm the opinions of our own chemists as to their permanent and great value to agriculture. At the Eutaw House - "Eutaw's Hotel," - Baltimore, our Professor gives us an inkling into his gastronomic and convivial propensities, in the discussion of "Canvass-backs," and "Apple-toddy." A highly wrought recipe for making the latter is given, in which the virtues of a "red-streak apple, roasted before a slow fire, on a China plate," are a part of the process; but whether the compound is to be stirred with a sharp stick or a blunt one, we are not informed.

This, he has discovered, although a winter, is not a very "slow" drink, and also that mint-juleps are a summer beverage, which the "jovial middle * states men,'" and not the strait-laced temperance Yankees, had discovered to him!

Washington. Here again the guide books and the scribblings of foreign tourists, are emptied out upon his groaning table, for scissoring, clipping, and pasting. "Magnificent distances," the President, Congress, the Supreme Court, the public buildings, Southern Nullification, tariff, free-trade, as taught us by English policy, slavery, the public lands, and Smithsonian Institute, each, every, and all of them came tinder his emasculating pen, and are discussed with a self-complacency and decision from which there is no appeal. The only new subject of discussion is that of the Agricultural Bureau, in which, we regret to say, no new idea is advanced. But he is quite clear that two or three Republics, made out of our existing one, would be a wholesome improvement upon our present system; and the annexation of Cuba and Canada, he fears, would be embarrassing to our President and his Cabinet!

While in Washington, our friend made a detour down into "Old Virginia," where he "steamed" it - (what an inveterate toper the Professor has got to be!) - eight miles on the Potomac to Alexandria! And here the statistics again rattle like a hail shower about his ferocious goose quill. Slang words, political economy. rise, progress and increase of slavery, all jingle again in beautiful succession. We have a story about a lady and a "Britisher," and our unfortunate politics continue to annoy his chemico-agricultural head until he leaves the capitol, and again addresses himself to the north.

Arrived at New York on the 5th February, our author adjusts himself to the settlement of the conflicting pretensions, between his own country and ours, to skill and superiority in the construction of Atlantic steamers, the commerce, manufactures, population, and prosperity of our great emporium, and makes up his mind that after all it is only a British town, manned and worked by British labor, supplied by British capital, and kept in this breathing world by British influence! Here the old files of statistics are unfolded, and their subjects again canvassed, during his six days stay, in which his agricultural researches are extended into the American Institute, and back into Mr. Pell's apple orchard, the only one he appears yet to have heard of on this side the Atlantic.

February 11th. Back to Boston. His stay here, off and on, was now six weeks, haying been engaged in giving a course of lectures at the Lowell Institute, on the "Relations of Science to Agriculture," - a repetition of those delivered at Albany. His mind here seems to have been sorely exercised in comparing the Service and Liturgy of the Established Church in England with that of the United States, and especially in its application to the Unitarian faith, as if the latter doctrines were solely American, and had not been imported a century ago from England. The Mormons and their polygamy, again haunt his peace, and he is sadly puzzled to ascertain whether "their Senators and Representatives would bring their harems to Washington with impunity; and if one of their wives eloped to Boston, the husband could reclaim her without doubt, as he now does his slave - [the Mormons do not hold slaves, we believe,] all the laws of New-England against bigamy, notwithstanding?"