274 UNCLASSIFIED PUBLICATIONS [Bot. Absts., Vol. IV t 



1844. Pammel, L. H. Cocklebur injurious. Amer. Jour. Vet. Med. 14: 358. 1919. — 

 A brief statement is made of the conjectures in regard to poisoning by cocklebur — species of 

 Xanthium. — C. D. Marsh. 



1845. Pammel, L. H. Forage poisoning. Amer. Jour. Vet. Med. 14: 360. 1919.— In 

 reply to question as to whether crab-grass smut ( Ustilago rabenhorstiana) might have been 

 the cause of deaths of cattle, reply is made that the smut is not strongly toxic, and that the 

 deaths were probably produced by sorghum or some other toxic plant. — C. D. Marsh. 



1846. Pammel, L.H. Loco weed and salt sage. Amer. Jour. Vet. Med. 14:360-361. 1919.— 

 A letter is quoted from Dr. Benoy, of Maxwell, New Mexico, in which are described the 

 symptoms produced in horses from eating "salt" or "white" sage — Eurotia lanata. Refer- 

 ence is also made to a loco plant, Astragalus sp., with a purple bloom. — C. D. Marsh. 



1847. Sauvageau, C, and Louis More ait. Sur l'alimentation du cheval par les algues 

 marines. [Marine algae as food for horses.] Compt. Rend. Acad. Sci. Paris 168: 1257-1261. 

 1919. — Authors note that various algae have been used for forage at various times, among 

 which were Laminaria flexicaulis , Alaria esculenta, Rhodymcnia palmata and Fucus serratus. 

 Feeding experiments using Fucus serratus, Laminaria saccharina and L. flexicaulis showed 

 that F. serratus and L. flexicaulis make excellent forage when animals become accustomed 

 to them, and that they appear also to assist in the assimilation of other foods. — V. H. Young. 



1848. Seel, E., W. Detjzel, and E. Raunecker. Uber Kriegsbiere. [War beer.] Zeit- 

 schr. Untersuch. Nahrungs- u. Genussmittel 37: 116-124. 1919. 



1849. Smith, E. A. Illustrating biological manuscripts. Trans. Amer. Microsc. Soc. 38: 

 1-19. PI. 1-5, fig. 1-7. 1919. — Books on drawings are usually written for artists and journey- 

 men, and the beginner has difficulty in finding in them the information he desires. An attempt 

 is made in this article to give clearly such information as the beginner in science needs for 

 making drawings, of the media used for certain classes of work, how drawings are made, and 

 the limitations of reproduction methods. Black pictures on white backgrounds make the 

 best reproductions. Authors are advised to study illustrations in journals and to select the 

 styles of drawings which will best illustrate their subjects. Three methods of illustration are 

 discussed: Intaglio; Planographic, which includes lithography, photolithography, and the 

 photogelatin or heliotype method; and Relief, which includes the zinc-process and half-tone. 

 Each process is discussed in detail. Under the head "Drawing for publication," the follow- 

 ing topics are discussed: outline; shading; drawing in ink, wash, crayon and pencil; fixing 

 pencil and crayon drawings; combinations; methods for special subjects; colored drawings 

 and their reproduction; graphs; photographs; reduction and arrangement of drawings for 

 reproduction. The article is fully illustrated with text figures and plates, and a table of meth- 

 ods and processes more commonly used for special subjects and one of standard magnifications 

 are given. — S. H. Essary. 



1850. Soth, Mrs. Blanche H. The Arctic gentian. Amer. Bot. 25: 41. PI. 1. 1919. 



1851. Thatcher, R. W. Cooperation in peat investigations. Jour. Amer. Peat Soc. 13: 

 10-12. 1920. 



1852. Von Blon, J. L. Binder twine from the desert. How a use has been found for an 

 utterly useless plant. Sci. Amer. 121: 82-83, 97. 7 fig. 1919. — Descriptive of the yucca or 

 "Spanish bayonet." — Chas. H. Otis. 



1853. Whetzel, H. H. Democratic coordination of scientific effort. Science 50: 51-55. 

 July, 1919. — In this paper, delivered before the joint session of the Botanical Society of 

 America and the American Phytopathological Society of America, at Baltimore, Dec, 1918, 

 the author makes a strong appeal for cooperation and coordination among scientific men. 

 Progress recently made among plant pathologists is used as illustration of what can be accom- 

 plished in other fields of science. — A. II. Chivers. 



