9-12 



SCIENCE 



[N. S. Vol. XXXIII. No. 859 



field if the two samples are taken a year apart. 

 N. I. P. in soil gave the higher results on an 

 average, but not always in individual cases, show- 

 ing that our soil 1931, which has been used so 

 much, affords better conditions for nitrification 

 than most of our soils. 



N. I. P. in solution shows no correlation with 

 fertility. N. I. P. in soil shows better nitrifica- 

 tion with the good soil in 69.2 per cent, of the 

 pairs. N. E. shows no nitrification in either the 

 good or poor samples in 29.6 per cent, of the 

 pairs, but where there is nitrification it shows 

 better in the good in 63.2 per cent, of the pairs. 

 There are several samples in which the poor soil 

 shows better N. E. and N. I. P. than the good soil. 



Some Points on Architectural Acoustics: Andrew 

 H. Patterson, University of North Carolina, 

 Chapel Hill. 



An account of experiments made by the author 

 and Mr. A. L. Field on the acoustics of Memorial 

 Hall at the University of North Carolina. The 

 reverberation in this hall is very bad, and the 

 problem is complicated by bad echoes due to 

 large flat panels in the dome-shaped ceiling. 

 Further experiments will be undertaken in an 

 attempt to find a complete solution of the 

 difficulty. 



Preliminary Report on the Begeneration of Ne- 

 merteans and Amphitrite: JUDSON D. Ives, 

 "Wake Forest College, Wake Forest, N. C. 

 Sections of nemerteans were found to regen- 

 erate readily and rapidly. But little new material 

 formed on the anterior surfaces. Small sections, 

 not more than 1.2 cm. long, in twenty -five days 

 regenerated 2.5 cm. on their posterior surfaces. 

 A section, 2.1 em. long, regenerated 1.5 cm. in 

 twenty-five days. A worm, with its posterior por- 

 tion cut off, its head and the remaining anterior 

 portion measuring 10.2 cm., regenerated 1 cm. in 

 twenty-nine days. 



In Amphitrite, the tentacles regenerate readily. 

 Worms, with the portion in front of the second 

 pair of branchias removed, thereby removing the 

 tentacles and the first pair of branchife, lived for 

 thirteen days, and were in good condition when 

 killed. 



A Dangerous Apple Disease: F. L. Ste\'ENs and 

 Guy West Wilson, North Carolina College of 

 Agriculture and Mechanic Arts, West Raleigh. 

 This disease came to our notice in 1909 from 

 Lincoln County, where it appeared in 1908 on a 

 single tree and despite the cutting out of all dis- 

 ease seen and spraying with lime-sulphur it spread 



the next year to thirteen trees. The same trouble 

 appeared in Sampson County in 1909 with even 

 more disastrous results. 



Whitish or pinkish pustules appear on the 

 younger twigs and about the crotches of the tree. 

 These bear numerous spores of the Fusarium or 

 Tuiercularia type, but so far no ascigerous form 

 has been connected with them. The infection is 

 in the bark, the diseased areas shriveling and 

 separating. The epidermis splits away, exposing 

 the browned surface beneath, or the pustules 

 merely break through the epidermis, especially 

 near the lenticels. Upon older twigs the bark 

 cracks longitudinally, exposing rows of pustules 

 in the cracks. A pinkish mycelial growth some- 

 times appears on the diseased twigs. 



Condimental Feeds, Stoch and Poultry Tonics and 



Conditioners: G. M. MacNider, Department of 



Agriculture, Ealeigh. 



A review of the work done by the author on 

 proprietary stock and poultry medicines, the re- 

 sults of which have been published in full in a 

 recent bulletin of the North Carolina Department 

 of Agriculture. 



Sixty-four preparations were analyzed chem- 

 ically and microscopically. They were found to 

 be composed largely of a base material such as 

 cotton-seed meal, oil meal, wheat bran, etc., with 

 small amounts of drugs added. Thirty-four drugs 

 were identified in the preparations examined. The 

 ones used in largest amount are practically worth- 

 less as medicines, while those that are of value 

 are used in such small amount that they can have 

 no effect. 



The Turl'ey Buzzard Must Go: George W. Lat, 



St. Mary's School, Ealeigh. 



Originally ' ' the birds of the air and the beasts 

 of the field" were the recognized scavengers. 

 The dog even now is so used in oriental countries, 

 but in a higher civilization his services have been 

 superseded by more modern methods. 



The turkey buzzard spreads diseases such as 

 chicken pox and hog cholera chiefiy by infection 

 carried on the feet. Owing to his great range of 

 flight he carries disease from the point of infec- 

 tion to places far distant. If burial, the proper 

 method for disposal of dead bodies, is used, he 

 becomes a predatory bird, killing chickens, young 

 pigs, etc. He is therefore a dangerous bird and 

 should no longer be protected by law. 



To be published in full in the current number 

 of the Journal of the Eli-sha Mitchell Scientific 

 Society. 



