six hundred houses had to be pulled down to make place for them. A railing running along their entire length cuts them off from the town. [Transcribers note 1: changed from 'words'] During the course of last year 4,379 vessels entered the port of Antwerp, gauging a total of 3,734,428 tons, which places Antwerp, as I have already stated, at the head of European ports. In 1882 the tonnage of Havre was only 2,200,000, that of Genoa 2,250,000, and of Bilboa 315,000, owing to its iron ore exports. Among the English ports a few only exceed Antwerp. London is still the first port in the world, with a tonnage of 10,421,000 tons, and Liverpool the second, with 7,351,000 tons; Newcastle follows with 6,000,000 tons, also in excess of Antwerp, but both Hull and Glasgow are below, with respectively 1,875,000 and 2,110,000 tons.--_Pall Mall Gazette_. * * * * * BICYCLES AND TRICYCLES. [Footnote: A recent lecture before the Society of Arts, London.] By C.V. BOYS. The subject of this paper is one of such wide interest, and of such great importance, that it is quite unnecessary for me to make any apology for bringing it to your notice. Exactly two months ago, I had the honor of dealing with the same subject at the Royal Institution. On that occasion I considered main principles only, and avoided anything in which none but riders were likely to take an interest, or which was in any way a matter of dispute. As it may be assumed that the audience here consists largely of riders, and of those who are following those matters of detail, the elaboration, simplification, and perfection of which have brought the art of constructing cycles to its present state of perfection, I purpose treating the subject from a totally different point of view. I do not intend, in general, to describe anything, assuming that the audience is familiar with the construction of the leading types of machines, but rather to consider the pros and cons of the various methods by which manufacturers have striven to attain perfection. As a discussion on the subject of this paper will doubtless follow--and I hope makers or riders of every class of machine will freely express their opinion, for by so doing they will lend an interest which I alone could not hope to awaken--I shall not consider it necessary to assume an absolutely neutral position, which might be expected of me if there were no discussion, but shall explain my own views without reserve. The great variety of cycles may be grouped under the following heads: 1. The Bicycle unmodified. 2. The Safety bicycle, a modification of 1. 3. The Center-cycle. 4. The Tricycle, which includes five general types: (a.) Rear steerer of any sort. (b.) Coventry rotary. (c.) Front steerer of any sort (except e). (d.) Humber pattern. (e.) The Oarsman. 5. Double machines: sociables and tandems. 6. The Otto.