BULLETINS 23 



Pt. 7. Natural gas: Its production, service, and conservation. By Samuel 

 S, Wyer. Pp. 1-67, 20 figs., 8 pis. Dec. 28, 1918. 



Pt. 8. Manufactured gas in the home. By Samuel S. Wyer. Pp. i-vi, 



1-24, 11 figs. June 9, 1923. 



103. Contributions to the geology and paleontology of the Canal Zone, Panama, 



and geologically related areas in Central America and the West Indies. 



Prepared under the direction of Thomas Wayland Vaughan. Pp. i-xviii, 



1-612, 27 figs., 154 pis. Feb. 21, 1920. 



Pt. 1. On some fossil and recent Lithothamnieae of the Panama Canal 

 Zone. By Marshall A. Howe. Pp. 1-13, i, 11 pis. Feb. 9, 1919. 



Pt. 2. The fossil higher plants from the Canal Zone. By Edward W. 

 Berry. Pp. 15-44, i, 7 p!s. Jan. 11, 1919. 



Pt. 3. The smaller fossil Foraminifera of the Panama Canal Zone. By 

 Joseph Augustine Cushman. Pp. 45-87, i-ii, 15 pis. Feb. 18, 1919. 



Pt. 4. The larger fossil Foraminifera of the Panama Canal Zone. By 

 Joseph Augustine Cushman. Pp. 89-102, i, 12 pis. Jan. 7, 1919. 



Pt. 5. Fossil Echini of the Panama Canal Zone and Costa Rica. By Rob- 

 ert Tracy Jackson. Pp. 103-116, i, 3 figs., 7 pis. Feb. 9, 1919. 



Pt. 6. Bryozoa of the Canal Zone and related areas. By Ferdinand Canu 

 and Ray S. Bassler. Pp. 117-122, i, 1 pi. Jan. 28, 1919. 



Pt. 7. Decapod crustaceans from the Panama region. By Mary J. Rath- 

 bun. Pp. 123-184, i-iii, 13 pis. Jan. 8, 1919. 



Pt. 8. Cirripedia from the Panama Canal Zone. By Henry A. Pilsbry. Pp. 

 185-188, 1 pi. Jan. 28, 1919. 



Pt. 9. Fossil corals from Central America, Cuba, and Porto Rico, with an 

 account of the American Tertiary, Pleistocene, and Recent coral 

 reefs. By Thomas Wayland Vaughan. Pp. 189-524, i-xiv, 22 

 figs., 85 pis. July 11, 1919. 



Pt. 10. The sedimentary formations of the Panama Canal Zone, with 

 special reference to the stratigraphic relations of the fossiliferous 

 beds. By Donald Francis MacDonald. Pp. 525-545, 2 figs., 2 pis. 

 May 16, 1919. 



Pt. 11. The biologic character and geologic correlation of the sedimentary 

 formations of Panama in their relation to the geologic history of 

 Central America and the West Indies. By Thomas Wayland 

 Vaughan. Pp. 547-612. May 19, 1919. 



104. The Foraminifera of the Atlantic Ocean. By Joseph Augustine Cushman. 



Pt. 1. Astrorhizidac. Pp. i-vii, 1-111, 39 pis. July 1, 191S. 



Pt. 2. Lituolldae. Pp. i-vii, 1-1 U, 18 pis. Oct. 6, 1920. 



Pt. 3. Textulariidae. Pp. i-viii, 1-149, 26 pis. June 28, 1922. 



Pt. 4. Lagenidae. Pp. i-x, 1-228, 42 pis. Sept. 27, 1923. 



Pt. 5. Chilostomellidae and Globigerinidae. Pp. i-v, 1-55, 8 pis. May 20, 



1924. 

 Pt. 6. Miliolidae, Ophthalmidiidae, and Fischerinidae. Pp. i-viii, 1-129, 



22 pis. June 29, 1929. 

 Pt. 7. Nonionidae, Camerinidae, Peneroplidae, and Alveolinellidae. Pp. 



i-vi, 1-79, 18 pis. Feb. 25, 1930. 

 Pt. 8. Rotaliidae, Amphisteginidae, Calcarinidae, Cymbaloporettidae, Glo- 



borotaliidae, Anomalinidae, Planorbulinidae, Rupertiidae, and 



Homotremidae. Pp. i-ix, 1-179, 26 pis. July 25, 1931. 



105. Catalogue of the postage stamps and stamped envelopes of the United States 



and possessions, issued prior to January 1, 1919. Compiled by Joseph B. 

 Lcavy. Pp. i-lx, 1-204, 3 pis. May 7, 1919. 



106. North American Early Tertiary Bryozoa. By Ferdinand Canu and Ray S. Bass- 



ler. Pp. i-xx, 1-879, 279 figs., 162 pis. (Text and plates in separate vols.) 

 June 30, 1920. 



107. Life histories of North American diving birds: Order Pygopodes. By Arthur 



Cleveland Bent. Pp. i-xiii, 1-245, 55 pis. Aug. 1, 1919. 



