190 



SCIENCE 



N. S. Vol. XXX. No. 762 



ceive the best medical and surgical attention, and 

 be instructed in health and hygiene. 



10. Cooperation: Local child-caring agencies 

 should cooperate and establish joint bureaus of 

 information. 



11. Undesirable Legislation: Prohibitive legis- 

 lation against transfer of dependent children be- 

 tween states should be repealed. 



12. Permanent Organization: A permanent or- 

 ganization for work along the lines of these 

 resolutions is desirable. 



13. Federal Children's Bureau: Establishment 

 of a federal children's bureau is desirable, and 

 enactment of pending bill is earnestly recom- 

 mended. 



The Planet Mars: John F. Lanneau, Wake For- 

 est College, Wake Forest, N. C. 

 The Photographic Equipment of a Biological 

 Laboratory and Some Micro-photographs Useful 

 in Teaching : H. V. Wilson, University of North 

 Carolina, Chapel Hill, N. C. 

 The photographic equipment of the new biolog- 

 ical laboratory of the University of North Caro- 

 lina was described. For life-size photographs or 

 reductions a Bausch and Lomb Tessar lens used in 

 a Century View camera mounted on a Folmer and 

 Schwing tilting laboratory stand, has proved use- 

 ful. For low magnifications the Zeiss mioro- 

 planars 4 and 5 held in a Century View camera 

 or in a Zeiss horizontal-and-vertical camera are 

 used, with either reflected or transmitted light. 

 In the latter case the object (an entire micro- 

 scope slide, for instance, covered with growing 

 organisms) is placed on a wooden box over a very 

 large aperture through which the light is sent 

 from a large plane mirror. For micro-photo- 

 graphs the Bausch and Lomb apparatus is used, 

 either with a Thompson automatic electric lamp 

 or with an acetylene lamp so made as to fit the 

 same light box. For freshly mounted balsam or 

 for glycerine slides the vertical microscope with 

 prism-arrangement offers great advantage. For 

 low magnifications of large fields the Zeiss micro- 

 planars 1-3 without ocular warrant the praise 

 that has been given them. The microphotographs 

 exhibited were of preparations illustrating points 

 of general interest in the fields of vertebrate em- 

 bryology and histology. 



'New Occurrences of Monazite in North Carolina: 

 Joseph Hyde Pratt, State Geologist, Chapel 

 Hill, N. C. 

 College Entrance Requirements in Science in 

 North Carolina: C. W. Edwards, Trinity Col- 

 lege, Durham, N. C. 



An Alteration in the Direction of Growth that 

 may he Induced in Sponges: H. V. Wilson, 

 University of North Carolina, Chapel Hill, Isl. C. 

 One of the common sponges in Beaufort harbor, 

 Stylotella sp., develops oscular lobes which grow 

 up toward the surface of the water when the 

 sponge rests on the bottom. If now such a sponge 

 with a set of well-developed lobes be laid on its 

 side in a large aquarium, growth takes place at 

 many points on the lobes and at right angles to 

 their long axis. This growth leads in the course 

 of a week to the development of a new set of 

 oscular lobes which again extend up towards the 

 surface of the water but at right angles to the 

 former lobes, whose terminal oscula have now 

 disappeared. 



The Wistar Institute Journals and the Need for 



their Support: H. V. Wilson. 



It was pointed out that growth in the biological 

 departments of colleges led to the need of suitable 

 organs for publication, and that it was to the 

 manifest interest of these departments to lend 

 financial support to such journals as those of the 

 Wistar Institute. 



A New Species of Water Mold: W. C. Cokeb, 

 University of North Carolina, Chapel Hill, N. C. 

 In October, 1908, a species of Leptolegnia was 

 found at Chapel Hill, N. C, and has been kept 

 growing in the laboratory since. It proves to be 

 near the long lost Leptolegnia caudata DeBary 

 of Germany, but seems to be distinct enougn to 

 be considered a new species. 



Delayed Opening of Cones in Certain Species of 



Pines: W. C. Cokeb. 



Cones of Pinus tuierculata from California and 

 Pinus serotina from South Carolina were shown. 

 Though mature for about eight years they had not 

 opened. This tendency is developed to such an 

 extent in P. tuherculata that the cones seem never 

 to open until the wood on which they are borne is 

 dead. 



Exhibit of a Double-flowered Sarraoenia and a 



New Variety of Elliott's Gentian: W. C. Coker. 



Double flowers of Sarracenia rubra were shown 



from Hartsville, S. C. They have not before been 



known in the genus. Other specimens exhibited 



were a white variety of Gentiana Elliottii from 



Society Hill, S. C, and leaves and fruits of Acer 



floridana from Chapel Hill, N. C. 



Some Notes on the Song Periods of Birds: C. S. 



Brimley, Raleigh, N. C. 



