XII. MISCELLANEOUS. 845 



chamber of Petteukofer's respiration apparatus on those days when, in addition, 

 the products of respiration were determined. 



See Neue Beitrage zur Begriindung einer rationellen Eiitterung der 

 Wiederkauer, edited by Henneberg, Gottingen, 1870-71. 



3940. Mercurial Air Pump, for the analysis of blood-gases. 



Geissler $ Son, Berlin. 



The taps of the air pumps and other apparatus must be turned gently 

 after they have been smeared slightly with lard until they appear transparent 

 and clear. 



3941. A Sample Collection of Sections of Wood. 



Dr. If. Nordlinger, Hohenheim, Wurttemberg. 



The volume, which is the seventh published, although it (as well as the pre- 

 ceding volumes) follows as far as possible the Linnsean nomenclature, contains, 

 however, about 50 newly introduced kinds of wood from various climates. It 

 gives also an extraordinary variety of the inner structures of trees. There are 

 specimens amongst them of the Susedaand Atterstonia of Rapp, which, though 

 so abundant in the Mediterranean, can on account of their abnormal structure 

 be only classified with difficulty. 



Especially interesting is the comparison from the originals of different kinds 

 of wood belonging to the same species given in the seventh volume. 



3942. Zuca's Drawing Apparatus, modified by Speugel. 



A. Wichmann, Hamburg. 



3943. Orthoscope. A. Wichmann, Hamburg. 



3944. Two Large Sachs 9 Vegetation Flasks, for coloured 

 light, 500 mm. high, and 250" mm. across. 



Warmbrunn, Quilitz, $ Co., Berlin. 



3945. Two Similar Flasks, but smaller, entirely of glass. 



Warmbrunn, Quilitz, <fy Co., Berlin. 



3946. Kronecker's Warm Chamber for Digestion. 



Warmbrunn, Quilitz, $ Co., Berlin. 



3947. Ludwig's Strom iihr or Haemodromometer. 



T. Hawks ley. 

 3949. Set of Physiological Operating Instruments. 



T. Hawksley. 

 3949a. Table, with 



(.) Fifteen pieces of the original burners which Middeldorpf, 

 the discoverer of galvano-caustic, employed. 



(.) Collection of nine different uterus cauterizers. Wen con- 

 strictor. Bow cutter, with five adaptable tubes. Appliance for 

 cauterizing the almond glands. Sliding corrector. 



(c.) Universal handle for four porcelain cauterizers. Intestine 

 cauterizer. Tooth cauterizer. 



(d.) Tonsil cutter, for cauterizing the almond glands. 



Kgl. chirurgische Klinik der Univ. Brcslau (Prof. Dr. 

 Fischer). ' 



