174 Finn Mf«;t:rM or N'atubal History — Repobts. Vol. V. 



Tl»c i>ii»unn-s: a ^^ r.iph rcproduciinK nine l>*pical kj-^u and 

 illustrating the nv f conju^'alion, colonization, and the production 



o( r« •^, 1 i.c t '"ac: a monoj • ' play reproducing 



ten ' and muUi<  ..u.ir species ols^i ki>i u.i um of conjugation 



in tlu 'tr ty|x: and the formation and ejection of zoospores in 



thr rr.'. ;..ir fonns; The Liverworts: a natural-size colony of 



N .1, with cnlarReti male and female reproductive organs and a 



series of highly majn^ified reproductions illustrating both forms of 

 generation; The Horsetails: natural-size reproductions of a wbole 

 sterile ve^'ctativc sh(X)t, a complete male shoot and a magnified section 

 of a sterile *'cone," also a cJuster of sporophores. A number of other 

 pfieccs were produced and i * " d awaiting further repro<^ s in 



the families to which they i- i ^.i i. They arc: The Pepper i m.iii. : a 

 reproduction of a bundle of frcjih leaves of the Betel Pepper such as 

 are sold in Malayan markets. The Arrow-Root Family: five natural- 

 size flowers of Thalia so dispiiscd as to reveal the peculiar development 

 for fertilization; The Pineapple Family: a natural-size branch of a 

 Calabash tree, in full leaf, acting as host for a colony of Tillandsias; 

 The Ginger Family: reproduction of a full size, fresh, ripe fruit of the 

 Cardamom as sold in Malayan markets as a vegetable; The Gamboge 

 Family: a leafy tip of a branch of the Mangostccn bearing a full-ripo 

 fnnl, three sections of the fruit showing the disposition of the pulp and 

 seeds; The Fig Family: the tip of a leafing Osage Ora- v'<' Vrar. h VwAr- 

 ing two mature fruits; The Caper Family: an enlarj^; 

 a section of the ovar>- and a fully matured fruit; The Connarad Family: 

 a leafy branch of Connarus bearing a cluster of mature fruits, two 

 fruits opened to reveal the peculiar seed and its aril; The Birch Family: 

 an enlarged portion of a male and a female catkin displa>'ing the essen- 

 tial organs and a still greater enlargement of a stamen ; The Screw-Pine 

 Family: reproduction of a mature Pandanus fruit. 



A number of objects and collections in the Department of Geology 

 have been installed in various halls, but as heretofore, owing to lack of 

 space, this has been accomplished in most cases only by removal of 

 other series which had previously been on exhibition. By some readjust- 

 ments in Skifl Hall, a floor case containing about fifty of the largest 

 specimens of copper from Lake Superior presented by Nathan P. and 

 Alfred P. Leopold was installed. Before installation of these specimens 

 they were thoroughly cleaned by immersion in sodium c>anide and 

 then carefully coated with shellac by means of an air brush so that 

 they could not again tarnish. At the same time the opportunity was 

 improved to give a similar treatment to a mmibcr of other sped- 

 mcr\s of rmtive copper and silver. The valuable collection of Lake 



