Vol. xxxix. | 28 
(both from Mesopotamia), while Dodson took a clutch of 
three in Tripoli, and Mr. Jourdain a single egg in Algeria. 
Of these sixteen eggs no fewer than ten were exhibited, 
seven from Mr. Jourdain’s collection, two from Mr. Stuart 
Baker’s, and one from Lord Rothschild’s. The other known 
eggs are either oviduct specimens (of which two unpigmented 
examples were shown by Mr. Stuart Baker), or else have 
been laid in the Ghizeh Zoological Gardens. Two clutches 
of these (three and two) were shown by Lord Rothschild. 
The discrepancies in the breeding-dates are remarkable, as 
Mr. Jourdain found a clutch of two on April 15th in Algeria — 
and one of Mr. Stuart Baker’s oviduct eggs was obtained in 
February! The Sind eggs were taken on May 16th, but 
those from Mesopotamia not till June 11th and 21st, and 
the Tripoli clutch on July 17th, so that the breeding-season 
must extend for at least three months and probably con- 
siderably longer. 
Mr. Cuas. OtpHam gave the following account of the 
nesting of the Black-necked Grebe in Hertfordshire :— 
“‘The Black-necked Grebe (Podiceps nigricollis) has 
appeared from time to time on the large canal-reservoirs at 
Tring, but, apart from an adult in full breeding-dress on 
April 18th, 1909, it was until the spring of 1918 looked 
upon as an irregular and uncommon winter visitor. In 
Lord Rothschild’s collection at Tring are three birds, all in 
winter plumage :— | 
Date. Sea. Age. 
Noy. 24th, 1903. 3 Adult winter plumage. 
Nov. 19th, 1908. 2 Young of year. 
Noy. 21st, 1908. “ Adult winter plumage. 
“¢ Besides these four birds [ have notes of one on November 
5th, 1911, one, which I judged from some slight differences 
in plumage to be another bird, on December 2nd of that 
year, and one on January 20th and 27th, 1918. 
“On April 28th, 1918, I noticed two birds in full breeding- 
plumage, obviously from the slight difference in size a pair, 
