The people of Munich, according to one of their most famous chroniclers, have always been noted for their piety ("Fromm waren die Münchner zu jeder Zeit"), but they have never been celebrated for that virtue of cleanliness which is said to be akin to godliness: indeed, they are known amongst other Bavarians as _die dreckigen Münchner_ ("the filthy Munichers"); and certain it is that their city is far behind the times in all sanitary matters. The introduction of sewers is a very recent improvement. It will scarcely be believed that many of the broad, showy streets which came into existence under the patronage of Ludwig I. were laid out and built up without any reference to this first necessity of all thoroughfares. Even the Theresien Strasse has not long rejoiced in a "canal;" and the sewer was laid in that finest part of the Gabelsberger Strasse which runs past the Pinakothek and the Polytechnic School as late as the summer of 1873, while the upper end of the same street, which is notoriously unhealthy, is still unpaved and undrained. The Munich sewers, however, are not so great a boon as one might suppose: indeed, they may be considered as mere receptacles and condensers of the evil substances and odors that would be promiscuously diffused. Owing to a want of knowledge or of skill in their construction there is not sufficient fall to carry away their contents, nor is there any system of flushing to drive out the sediment and cleanse the pipes. Consequently, there is a horrible odor ascending at all times from the open gratings, and frequently the pipes become choked, so as to necessitate the uncovering of the receptacle at a junction, and the taking out and carting away of the hideous slime--an operation which, of course, adds temporary intensity to the usual stench.