science and a great want of construction, a want which scientific men often experience, always excepting those mealy-mouthed professors who lecture "at the Royal," and get patronised by the blues, the Lavoisiers of May Fair! "Chowchowtow, my Lady! five feet seven inches high! Brazilian bird! When I just remind your Ladyship that the height of the tallest bird to be found in Brazil, and in mentioning this fact, I mention nothing hypothetical, the tallest bird does not stand higher than four feet nine. Chowchowtow! Dr. Spix is a name, accurate traveller, don't remember the passage, most singular bird! Chowchowtow! don't know it by that name. Perhaps your Ladyship is not aware; I think you called that gentleman Mr. Grey; perhaps Mr. Grey is not aware, that I am Mr. Mackaw, I arrived late here last night, whose work in three volumes folio, on Brazilian Parroquets, although I had the honour of seeing his Lordship is, I trust, a sufficient evidence that I am not speaking at random on this subject; and consequently, from the lateness of the hour, could not have the honour of being introduced to your Ladyship." "Mr. Mackaw!" thought Vivian. "The deuce you are! Oh! why did I not say a Columbian cassowary, or a Peruvian penguin, or a Chilian condor, or a Guatemalan goose, or a Mexican mastard; anything but Brazilian. Oh! unfortunate Vivian Grey!" The Marchioness, who was quite overcome with this scientific appeal, raised her large, beautiful, sleepy eyes from a delicious compound of French roll and new milk, which she was working up in a Sèvre saucer for Julie; and then, as usual, looked to Vivian for assistance. "Mr. Grey, you know everything; tell Mr. Mackaw about a bird." "Is there any point on which you differ from Spix in his account of the Chowchowtow, Mr. Mackaw?" "My dear sir, I don't follow him at all. Dr. Spix is a most excellent man, a most accurate traveller, quite a name; but, to be sure, I've only read his work in our own tongue; and I fear from the passage you have just quoted, five feet seven inches high! in Brazil! it must be an imperfect version. I say, that four feet nine is the greatest height I know. I don't speak without some foundation for my statement. The only bird I know above that height