398 Scientific Intelligence. 



of hard-wood block the stream in a number of places. The Pil- 

 coinayo was found to be navigable for boats of light draft, with 

 the exception of the marshes at Estero Patino, where canals and 

 locks would be necessary. h. e. g. 



6. The British Tunicata ; by the late Joshua Alder and the 

 late Albant Hancock, edited by John Hopkinson. Vol. II, pp. 

 xxviii + 164, plates 21-50. London, 1907 (The Ray Society). — 

 This is the second volume of an unfinished monograph which for 

 more than thirty years after the death of both of the authors had 

 remained unpublished. This portion completes the work on the 

 solitary and social ascidians. The thirty plates, most of which 

 are colored, furnish excellent illustrations of the appearance and 

 anatomy of the 58 species discussed. The first volume was 

 noticed in vol. xx, p. 469, of this Journal. w. r. c. 



7. Die Insektenfamilie der Phasmiden ; bearbeitet von K. 

 Beunnee v. Wattenwtl, und Jos. Redtenbacher. Mit 

 Unterstiitzung der Hohen k.k. Akademie der Wissenschaf'ten in 

 Wien aus der Treil-Stiftung. I. Lieferung : Bogen 1-23 und 

 Tafel I- VI. Phasmidae Areolatae ; bearbeitet von J. Redten- 

 bacher. Pp. 180, 4to. Leipzig, 1906 (Wilhelm Engelmann). — 

 This is the first installment of an extensive systematic mono- 

 graph of all the species of Phasmids of the world. The senior 

 author is a recognized authority on this group of the Orthoptera. 



w. r. c. 



8. Trades and Ant i- Trades. —The long-accepted theory of the 

 existence of anti-trades blowing southwest and northwest above 

 the northeast and southeast trade winds, and formed by the 

 ascending currents above the thermal equator, has rested mainly 

 upon the observations upon the Peak of Teneriffe. Here the 

 southwest wind can be observed through the year, though it is 

 lower in winter than in summer. The truth of this theory, how- 

 ever, has been questioned, and in the summer of 1905 the steam 

 yacht Otaria was purchased and equipped by M. Teisserenc de 

 Bort, and an expedition was made, the expenses of which were 

 borne by him and by Mr. A. Lawrence Rotch of the Blue Hill 

 Observatory, Hyde Park, Mass. The observers were Messrs. 

 Maurice and Clayton, and observations were carried on chiefly in 

 the neighborhood of the Azores, Madeira, the Canaries and Cape 

 Verde Islands. Kites were used up to an altitude of 3000 meters 

 and balloons above this level ; the latter could be followed by the 

 telescope to a height of 11,000 or 12,000 meters. The facts 

 observed, given in detail in the original article, contain various 

 points of considerable interest. 



The conclusion reached is stated as follows: " that the upper 

 anti-trade is shown both by the balloons and by the drift of the 

 clouds, the stratified conditions giving place to the southerly 

 wind between 3000 and 4000 meters. Therefore, the classic 

 observations of the return-trade, which were long ago made on 

 the Peak of Teneriffe, indicate a general phenomenon and agree 

 with those obtained over the open ocean by the present expedi- 

 tion."— Proc, Amer. Acad., xlii, 263-272. 



9. The Museum of the Brooklyn Institute of Art and Sciences. 

 Science Bulletin, Volume I, JS r o. 10. — This bulletin contains a 



