The spring immigrants flowed in gently at intervals during April and early May. The only rush recorded was on the 23d of April, when many Wheatears, Warblers, and "Flycatchers" occurred--the movement being especially pronounced at the Nash and the Eddystone; minor barometric depressions and low temperature, the wind being N.E., had prevailed prior to the 23d, on which day more favourable conditions set in, producing moderate southerly and south-easterly gales, and a rise in the temperature. The immigration of summer visitors extended until the 10th and 11th of May, when _Phylloscopus trochilus_, _Acrocephalus phragmitis_, and _Sylvia cinerea_ were killed, and _Cypselus apus_ observed at Langness. Of the transvolant spring migrants, _Numenius phæopus_ was noticed at Langness on the 16th of May. August.--The autumnal movements commenced with an emigration of _Cuculus canorus_, _Cypselus apus_, and _Phylloscopus trochilus_, several of which were killed at the Nash lantern on the 1st of August. This was followed by movements of _Phylloscopus rufa_, _Turdus torquatus_, _Sylvia cinerea_, _Saxicola œnanthe_, _Anthus trivialis_, _Motacilla rayi_, _Cotile riparia_, and _Cypselus apus_, extending from August the 3d to the 9th, and chiefly observed at southerly stations. On the night of the 22d there was a great rush of birds at the Nash, when some hundreds of _Acrocephalus phragmitis_, _Sylvia cinerea_, and many _Saxicola œnanthe_ were flying around the lantern from 9 to 10.30 P.M., twenty-nine being killed. Emigrating summer visitors were also observed on the 23d, 27th, and 31st of the month. September.--On the 3d there was a decided rush of birds at the Nash, on which Mr Nicholas remarks as follows:--"There was an enormous arrival of small birds, the greatest number ever seen here at any one time." This singular movement lasted from 2.10 A.M. to 3.15 A.M., or a little over an hour, during which brief interval unfortunate individuals of the following species perished at the lantern:--_Caprimulgus europæus_, _Emberiza miliaria_, _Sylvia cinerea_, _Phylloscopus trochilus_, _Cuculus canoras_, _Passer domesticus_, _Erithacus rubecula_, _Saxicola œnanthe_, and _Turdus merula_.[16] A general emigration of summer birds on the 23d and 24th, when a very decided fall of temperature was recorded, was the only other movement during the month. [Footnote 16: For further particulars of this interesting movement, _see_ p. 88.]