RECORDS OF MEETINGS 271 



mately by feeble and variable anastomoses, e. g., pulmonary, portal, porto- 

 renal, systemic, the latter subdividing into precaval and postcaval areas. 

 Between these the spinous an4 azygos vessels act as equilibrating anas- 

 tomoses (v. Baer), and are therefore brought into competition, a com- 

 petition which in sauropsids results unfavorably to the azygos as a gen- 

 eral rule, for here portal connections also tell against the azygos. Such 

 connections in mammals are formed between the postcardinal and portal 

 (Zumstein, Brown, Davis), but they are evanescent and antecede the ap- 

 pearance of the azygos, which maintains itself as a moderate sized and 

 rather variable channel except in cetaceans and sloths. In these forms 

 the spinal channels are of great size. 

 The Section then adjourned. 



William K. GtEegoey, 



Secretary. 



SECTION OF GEOLOGY AND MINEEALOGY 

 17 April, 1916 



Section met at 8:15 p. M., Vice-President Douglas W. Johnson pre- 

 siding. 



The minutes of the last meeting of the Section were read, and ap- 

 proved. 



The following program was presented : 



George F. Kunz, Eemaeks on a Pseudo-meteoeite, Ieon" 



Pyeite Ceystals, and a Black Dia- 

 mond. 



George I. Finlay, The Geology of Noeth Paek, Colorado. 



A. W. Grabau, Geology oe the Island of Gotland in 



THE Baltic Sea. 



Miss Marjorie O'Connell, Notes on the Geology of Oesel in the 



Gulf of Eiga. 



SuMMAEY of Papers 



Dr. Kunz stated that a pseudo-meteorite was sent to him for examina- 

 tion by Mr. Eobert A. Creager, of Mount Orab, Ohio. It weighs four 

 pounds and two ounces and is about the size and shape of a double hand. 

 It is not a meteorite, but a piece of cast iron scorao. As it had been in 

 the ground for some time it was thoroughly rusted. 



