44 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



July 10. — Put out five more stakes, with date marked on tbem, with 

 shell collectors attached 5 12 m. opened two dozen oysters (Potomae 

 ])lants); 4 p. m. poured fry into the pond. 



July 12. — Put out the spawn from one dozen oysters at 3 p. m. Tem- 

 perature of air, 80° F. Put out four stakes with shells attached. 



July 13, 12 m.— Opened two dozen oysters, natural growth, well filled 

 with eggs and milt; 4.30 p. m. poured tbe contents of the pail into the 

 pond. Temperature of water, 82° F. ; of the air, 83° F. Before putting 

 out fry a violent thunder and hail storm occurred. 



July 15. — Tbe most violent thunder storm of the summer at 9 p. m. 



July IG, 1 p. m. — Opened two dozen oysters; most of those opened 

 had but few eg'gs and milt; 3.30 p. m. poured the spawn into the pond. 

 Temperature of water, 84° F. ; of air, 85° F. 



July 17, 12 m. — Opened two dozen oysters well filled with spawn. 

 Poured spawn into pond at 4 p. m. Put out three stakes with col- 

 lectors attached. 



July 18, 3 p. m. — Opened one dozen oysters not well filled with ripe 

 spawn; poured into pond at 9 p. m. Temperature of air, 69° F.; that 

 of water not observed. Discovered spat on shells put out in Cedar 

 Island Channel June 1 ; none on those put out later. 



July 20, 10.45 a. ra. — Opened two dozen oysters well filled with spawn. 

 At 3 p. m. poured contents of pail into the pond. Put out six more 

 stakes with shells attached. 



§ 2. (Mr. Piebce's Eecord.) 



July 23. — At 10.30 a. m. the spawn of twelve female oysters was 

 mixed with the milt of three males; added water three times, and after 

 occasional agitation, carefully poured the same into the pond at 1.30 p. 

 m. Put out six new collectors marked with the date. 



July 25. — Opened about thirty oysters and took spawn from eighteen, 

 and emptied into the claire at 3.30 p. m., after standing in pail about 

 four hours. Put out six new collectors. Last evening a very severe 

 thunder storm ; wind, almost a hurricane, passed over the claire. Trees 

 nearly blown down. 



July 28. — Opened about three dozen oysters taken yesterday from 

 Cedar Island Channel, and found spawn in about two dozen abundant, 

 and a good projiortion of males. Put out five collectors and poured 

 the spawn into the pond at 2.45 p. m., after having stood in the pail 

 two and a half to three hours. Temperature of water in clair, 81° F. ; 

 temperature of air in claire, 77° F.; temperature of water in pail, 76° F.; 

 in bay, 79° F. ; in creek, 79° F. Day cloudy, and a strong southerly wind. 

 Heavy rain, with some thunder and lightning in the early evening. 



July 30. — Put spawn from about two dozen oysters into the pond 

 after it had stood about three hours. The adults from which this spawn 

 was taken were fresh from the off-shore beds (Cedar Island Channel), and 

 seemed to be in fine condition. 



