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a case for transpiration apparatus. The lecture room is quite large, and contains a fine projecting apparatus of Dr. Pfeffer's own design. Charts are evidently very much used. On the north ride is a small lecture room for Bacteriology. There is [[insertion]] ^ a [[/insertion]] special room[[strikethrough]] s [[/strikethrough]] for electrical experiements. East of [[left margin bracket]] The small lecture room is a small laboratory for beginners in histology and physiology. [[/bracket]] There are many cultures of algae in jars for experimental purposes with lights, etc. The south part of the east end is devoted to advanced students. Here there is an apparatus for throwing spectrum on slide, under dark [[end page]] [[start page]] 205 hood, and observing the effect (attraction, etc) of different colored lights on algae. On east side are two connected laboratories (not large) for advanced students. Then south on the east side is a small chemical laboratory, and sterilizing apparatus. The upper story is devoted to the home (evidently sumptuous) and private laboratories of Dr. Pfeffer. On the north side of the basement is a small, cool plant house attached to building. Here Dr. Pfeffer is just new working (with auxonometer) on the force of drooping of leaves in "sleep". The petioles are stiffened with