"Above all it should be the student's object to discover the principles of design by which the successive styles were governed, and in tracing their history he should trace the influence of circumstance and accident, which modify the current art of the day.... The history of architecture, and the development of style out of style, should never be taught without incessant reference to the constructional methods which were employed, and which played the principal part in the changes resulting from their employment." * * * * * Apropos of the perennial discussion of the question of professional ethics which from time to time comes into prominence in the meetings of the American Institute of Architects the following may be of interest. It is appended to the card of a certain architect which is published as an advertisement in a local paper and reads: "Any kind of architectural work promptly attended to and satisfaction guaranteed." In the resolutions recently adopted by the Boston Society of Architects concerning professional ethics it was maintained that architects should not advertise. The advertisement above may savor somewhat of its surroundings (above it a hair renewer is advertised and below it penny-royal pills) and suggest too much the "shoes tapped while you wait" order of advertising, but we fail to see why architects should be restrained from advertising if there are any benefits to be derived from it. And for our part we think that there are few architects whose business or practice might not be improved by judicious advertising. It is easy to lay down an arbitrary dictum and say that no professional man shall advertise, but what argument can apply to architects in this respect that does not equally apply to civil engineers and to landscape architects? And no one objects to the advertisements of the latter. The publication of architects' designs in the professional journals is in many cases advertising, pure and simple, but is not on this account to be condemned. The truth of the matter is that the exact point where advertising begins and ends is impossible to determine. One kind of advertising is considered allowable and dignified, another is not. In consequence there is opportunity for many differences of opinion. The "P. D.'s." If Chimmie Fadden were asked to translate the letters P. D., he would undoubtedly answer, "What 'ell?" and it must be acknowledged that this answer does credit to Chames's insight; but at the same time we feel sure that Chames would not be offended if he were informed that his favorite expression is not nearly such an appropriate definition of P. D. as it is of the play of Madame Sans Gêne, all rumors to the contrary notwithstanding And if Chames could be induced to give up for the while his everlasting search for a bull pup, we might proceed to inform him to the best of our ability what it really does mean.